281612980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^3\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:262

約数の個数: 96

約数和(自身を含む): 664070400

約数和(自身を除く): 382457420

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 121, 142, 149, 220, 242, 284, 298, 355, 484, 596, 605, 710, 745, 781, 1210, 1331, 1420, 1490, 1562, 1639, 2420, 2662, 2980, 3124, 3278, 3905, 5324, 6556, 6655, 7810, 8195, 8591, 10579, 13310, 15620, 16390, 17182, 18029, 21158, 26620, 32780, 34364, 36058, 42316, 42955, 52895, 72116, 85910, 90145, 94501, 105790, 116369, 171820, 180290, 189002, 198319, 211580, 232738, 360580, 378004, 396638, 465476, 472505, 581845, 793276, 945010, 991595, 1163690, 1280059, 1890020, 1983190, 2327380, 2560118, 3966380, 5120236, 6400295, 12800590, 14080649, 25601180, 28161298, 56322596, 70403245, 140806490, 281612980]

約数ペア:

[(1, 281612980), (2, 140806490), (4, 70403245), (5, 56322596), (10, 28161298), (11, 25601180), (20, 14080649), (22, 12800590), (44, 6400295), (55, 5120236), (71, 3966380), (110, 2560118), (121, 2327380), (142, 1983190), (149, 1890020), (220, 1280059), (242, 1163690), (284, 991595), (298, 945010), (355, 793276), (484, 581845), (596, 472505), (605, 465476), (710, 396638), (745, 378004), (781, 360580), (1210, 232738), (1331, 211580), (1420, 198319), (1490, 189002), (1562, 180290), (1639, 171820), (2420, 116369), (2662, 105790), (2980, 94501), (3124, 90145), (3278, 85910), (3905, 72116), (5324, 52895), (6556, 42955), (6655, 42316), (7810, 36058), (8195, 34364), (8591, 32780), (10579, 26620), (13310, 21158), (15620, 18029), (16390, 17182)]