20937840

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{103}}^1$

素因数の和:148

約数の個数: 240

約数和(自身を含む): 82328064

約数和(自身を除く): 61390224

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 16, 20, 21, 22, 24, 28, 30, 33, 35, 40, 42, 44, 48, 55, 56, 60, 66, 70, 77, 80, 84, 88, 103, 105, 110, 112, 120, 121, 132, 140, 154, 165, 168, 176, 206, 210, 220, 231, 240, 242, 264, 280, 308, 309, 330, 336, 363, 385, 412, 420, 440, 462, 484, 515, 528, 560, 605, 616, 618, 660, 721, 726, 770, 824, 840, 847, 880, 924, 968, 1030, 1133, 1155, 1210, 1232, 1236, 1320, 1442, 1452, 1540, 1545, 1648, 1680, 1694, 1815, 1848, 1936, 2060, 2163, 2266, 2310, 2420, 2472, 2541, 2640, 2884, 2904, 3080, 3090, 3388, 3399, 3605, 3630, 3696, 4120, 4235, 4326, 4532, 4620, 4840, 4944, 5082, 5665, 5768, 5808, 6160, 6180, 6776, 6798, 7210, 7260, 7931, 8240, 8470, 8652, 9064, 9240, 9680, 10164, 10815, 11330, 11536, 12360, 12463, 12705, 13552, 13596, 14420, 14520, 15862, 16940, 16995, 17304, 18128, 18480, 20328, 21630, 22660, 23793, 24720, 24926, 25410, 27192, 28840, 29040, 31724, 33880, 33990, 34608, 37389, 39655, 40656, 43260, 45320, 47586, 49852, 50820, 54384, 57680, 62315, 63448, 67760, 67980, 74778, 79310, 86520, 87241, 90640, 95172, 99704, 101640, 118965, 124630, 126896, 135960, 149556, 158620, 173040, 174482, 186945, 190344, 199408, 203280, 237930, 249260, 261723, 271920, 299112, 317240, 348964, 373890, 380688, 436205, 475860, 498520, 523446, 598224, 634480, 697928, 747780, 872410, 951720, 997040, 1046892, 1308615, 1395856, 1495560, 1744820, 1903440, 2093784, 2617230, 2991120, 3489640, 4187568, 5234460, 6979280, 10468920, 20937840]

約数ペア:

[(1, 20937840), (2, 10468920), (3, 6979280), (4, 5234460), (5, 4187568), (6, 3489640), (7, 2991120), (8, 2617230), (10, 2093784), (11, 1903440), (12, 1744820), (14, 1495560), (15, 1395856), (16, 1308615), (20, 1046892), (21, 997040), (22, 951720), (24, 872410), (28, 747780), (30, 697928), (33, 634480), (35, 598224), (40, 523446), (42, 498520), (44, 475860), (48, 436205), (55, 380688), (56, 373890), (60, 348964), (66, 317240), (70, 299112), (77, 271920), (80, 261723), (84, 249260), (88, 237930), (103, 203280), (105, 199408), (110, 190344), (112, 186945), (120, 174482), (121, 173040), (132, 158620), (140, 149556), (154, 135960), (165, 126896), (168, 124630), (176, 118965), (206, 101640), (210, 99704), (220, 95172), (231, 90640), (240, 87241), (242, 86520), (264, 79310), (280, 74778), (308, 67980), (309, 67760), (330, 63448), (336, 62315), (363, 57680), (385, 54384), (412, 50820), (420, 49852), (440, 47586), (462, 45320), (484, 43260), (515, 40656), (528, 39655), (560, 37389), (605, 34608), (616, 33990), (618, 33880), (660, 31724), (721, 29040), (726, 28840), (770, 27192), (824, 25410), (840, 24926), (847, 24720), (880, 23793), (924, 22660), (968, 21630), (1030, 20328), (1133, 18480), (1155, 18128), (1210, 17304), (1232, 16995), (1236, 16940), (1320, 15862), (1442, 14520), (1452, 14420), (1540, 13596), (1545, 13552), (1648, 12705), (1680, 12463), (1694, 12360), (1815, 11536), (1848, 11330), (1936, 10815), (2060, 10164), (2163, 9680), (2266, 9240), (2310, 9064), (2420, 8652), (2472, 8470), (2541, 8240), (2640, 7931), (2884, 7260), (2904, 7210), (3080, 6798), (3090, 6776), (3388, 6180), (3399, 6160), (3605, 5808), (3630, 5768), (3696, 5665), (4120, 5082), (4235, 4944), (4326, 4840), (4532, 4620)]