21082620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{179}}^1$

素因数の和:355

約数の個数: 96

約数和(自身を含む): 64350720

約数和(自身を除く): 43268100

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 151, 156, 179, 195, 260, 302, 358, 390, 453, 537, 604, 716, 755, 780, 895, 906, 1074, 1510, 1790, 1812, 1963, 2148, 2265, 2327, 2685, 3020, 3580, 3926, 4530, 4654, 5370, 5889, 6981, 7852, 9060, 9308, 9815, 10740, 11635, 11778, 13962, 19630, 23270, 23556, 27029, 27924, 29445, 34905, 39260, 46540, 54058, 58890, 69810, 81087, 108116, 117780, 135145, 139620, 162174, 270290, 324348, 351377, 405435, 540580, 702754, 810870, 1054131, 1405508, 1621740, 1756885, 2108262, 3513770, 4216524, 5270655, 7027540, 10541310, 21082620]

約数ペア:

[(1, 21082620), (2, 10541310), (3, 7027540), (4, 5270655), (5, 4216524), (6, 3513770), (10, 2108262), (12, 1756885), (13, 1621740), (15, 1405508), (20, 1054131), (26, 810870), (30, 702754), (39, 540580), (52, 405435), (60, 351377), (65, 324348), (78, 270290), (130, 162174), (151, 139620), (156, 135145), (179, 117780), (195, 108116), (260, 81087), (302, 69810), (358, 58890), (390, 54058), (453, 46540), (537, 39260), (604, 34905), (716, 29445), (755, 27924), (780, 27029), (895, 23556), (906, 23270), (1074, 19630), (1510, 13962), (1790, 11778), (1812, 11635), (1963, 10740), (2148, 9815), (2265, 9308), (2327, 9060), (2685, 7852), (3020, 6981), (3580, 5889), (3926, 5370), (4530, 4654)]