20490525

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{487}}^1$

素因数の和:531

約数の個数: 72

約数和(自身を含む): 42479424

約数和(自身を除く): 21988899

約数列:

[1, 3, 5, 9, 11, 15, 17, 25, 33, 45, 51, 55, 75, 85, 99, 153, 165, 187, 225, 255, 275, 425, 487, 495, 561, 765, 825, 935, 1275, 1461, 1683, 2435, 2475, 2805, 3825, 4383, 4675, 5357, 7305, 8279, 8415, 12175, 14025, 16071, 21915, 24837, 26785, 36525, 41395, 42075, 48213, 74511, 80355, 91069, 109575, 124185, 133925, 206975, 241065, 273207, 372555, 401775, 455345, 620925, 819621, 1205325, 1366035, 1862775, 2276725, 4098105, 6830175, 20490525]

約数ペア:

[(1, 20490525), (3, 6830175), (5, 4098105), (9, 2276725), (11, 1862775), (15, 1366035), (17, 1205325), (25, 819621), (33, 620925), (45, 455345), (51, 401775), (55, 372555), (75, 273207), (85, 241065), (99, 206975), (153, 133925), (165, 124185), (187, 109575), (225, 91069), (255, 80355), (275, 74511), (425, 48213), (487, 42075), (495, 41395), (561, 36525), (765, 26785), (825, 24837), (935, 21915), (1275, 16071), (1461, 14025), (1683, 12175), (2435, 8415), (2475, 8279), (2805, 7305), (3825, 5357), (4383, 4675)]