20521320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1$

素因数の和:195

約数の個数: 128

約数和(自身を含む): 65197440

約数和(自身を除く): 44676120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 41, 43, 60, 82, 86, 97, 120, 123, 129, 164, 172, 194, 205, 215, 246, 258, 291, 328, 344, 388, 410, 430, 485, 492, 516, 582, 615, 645, 776, 820, 860, 970, 984, 1032, 1164, 1230, 1290, 1455, 1640, 1720, 1763, 1940, 2328, 2460, 2580, 2910, 3526, 3880, 3977, 4171, 4920, 5160, 5289, 5820, 7052, 7954, 8342, 8815, 10578, 11640, 11931, 12513, 14104, 15908, 16684, 17630, 19885, 20855, 21156, 23862, 25026, 26445, 31816, 33368, 35260, 39770, 41710, 42312, 47724, 50052, 52890, 59655, 62565, 70520, 79540, 83420, 95448, 100104, 105780, 119310, 125130, 159080, 166840, 171011, 211560, 238620, 250260, 342022, 477240, 500520, 513033, 684044, 855055, 1026066, 1368088, 1710110, 2052132, 2565165, 3420220, 4104264, 5130330, 6840440, 10260660, 20521320]

約数ペア:

[(1, 20521320), (2, 10260660), (3, 6840440), (4, 5130330), (5, 4104264), (6, 3420220), (8, 2565165), (10, 2052132), (12, 1710110), (15, 1368088), (20, 1026066), (24, 855055), (30, 684044), (40, 513033), (41, 500520), (43, 477240), (60, 342022), (82, 250260), (86, 238620), (97, 211560), (120, 171011), (123, 166840), (129, 159080), (164, 125130), (172, 119310), (194, 105780), (205, 100104), (215, 95448), (246, 83420), (258, 79540), (291, 70520), (328, 62565), (344, 59655), (388, 52890), (410, 50052), (430, 47724), (485, 42312), (492, 41710), (516, 39770), (582, 35260), (615, 33368), (645, 31816), (776, 26445), (820, 25026), (860, 23862), (970, 21156), (984, 20855), (1032, 19885), (1164, 17630), (1230, 16684), (1290, 15908), (1455, 14104), (1640, 12513), (1720, 11931), (1763, 11640), (1940, 10578), (2328, 8815), (2460, 8342), (2580, 7954), (2910, 7052), (3526, 5820), (3880, 5289), (3977, 5160), (4171, 4920)]