21175440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{617}}^1$

素因数の和:657

約数の個数: 160

約数和(自身を含む): 77245056

約数和(自身を除く): 56069616

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 13, 15, 16, 20, 22, 24, 26, 30, 33, 39, 40, 44, 48, 52, 55, 60, 65, 66, 78, 80, 88, 104, 110, 120, 130, 132, 143, 156, 165, 176, 195, 208, 220, 240, 260, 264, 286, 312, 330, 390, 429, 440, 520, 528, 572, 617, 624, 660, 715, 780, 858, 880, 1040, 1144, 1234, 1320, 1430, 1560, 1716, 1851, 2145, 2288, 2468, 2640, 2860, 3085, 3120, 3432, 3702, 4290, 4936, 5720, 6170, 6787, 6864, 7404, 8021, 8580, 9255, 9872, 11440, 12340, 13574, 14808, 16042, 17160, 18510, 20361, 24063, 24680, 27148, 29616, 32084, 33935, 34320, 37020, 40105, 40722, 48126, 49360, 54296, 64168, 67870, 74040, 80210, 81444, 88231, 96252, 101805, 108592, 120315, 128336, 135740, 148080, 160420, 162888, 176462, 192504, 203610, 240630, 264693, 271480, 320840, 325776, 352924, 385008, 407220, 441155, 481260, 529386, 542960, 641680, 705848, 814440, 882310, 962520, 1058772, 1323465, 1411696, 1628880, 1764620, 1925040, 2117544, 2646930, 3529240, 4235088, 5293860, 7058480, 10587720, 21175440]

約数ペア:

[(1, 21175440), (2, 10587720), (3, 7058480), (4, 5293860), (5, 4235088), (6, 3529240), (8, 2646930), (10, 2117544), (11, 1925040), (12, 1764620), (13, 1628880), (15, 1411696), (16, 1323465), (20, 1058772), (22, 962520), (24, 882310), (26, 814440), (30, 705848), (33, 641680), (39, 542960), (40, 529386), (44, 481260), (48, 441155), (52, 407220), (55, 385008), (60, 352924), (65, 325776), (66, 320840), (78, 271480), (80, 264693), (88, 240630), (104, 203610), (110, 192504), (120, 176462), (130, 162888), (132, 160420), (143, 148080), (156, 135740), (165, 128336), (176, 120315), (195, 108592), (208, 101805), (220, 96252), (240, 88231), (260, 81444), (264, 80210), (286, 74040), (312, 67870), (330, 64168), (390, 54296), (429, 49360), (440, 48126), (520, 40722), (528, 40105), (572, 37020), (617, 34320), (624, 33935), (660, 32084), (715, 29616), (780, 27148), (858, 24680), (880, 24063), (1040, 20361), (1144, 18510), (1234, 17160), (1320, 16042), (1430, 14808), (1560, 13574), (1716, 12340), (1851, 11440), (2145, 9872), (2288, 9255), (2468, 8580), (2640, 8021), (2860, 7404), (3085, 6864), (3120, 6787), (3432, 6170), (3702, 5720), (4290, 4936)]