81309200

素因数分解:

$2^4\times 5^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{409}}^1$

素因数の和:505

約数の個数: 120

約数和(自身を含む): 226949760

約数和(自身を除く): 145640560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 50, 56, 70, 71, 80, 100, 112, 140, 142, 175, 200, 280, 284, 350, 355, 400, 409, 497, 560, 568, 700, 710, 818, 994, 1136, 1400, 1420, 1636, 1775, 1988, 2045, 2485, 2800, 2840, 2863, 3272, 3550, 3976, 4090, 4970, 5680, 5726, 6544, 7100, 7952, 8180, 9940, 10225, 11452, 12425, 14200, 14315, 16360, 19880, 20450, 22904, 24850, 28400, 28630, 29039, 32720, 39760, 40900, 45808, 49700, 57260, 58078, 71575, 81800, 99400, 114520, 116156, 143150, 145195, 163600, 198800, 203273, 229040, 232312, 286300, 290390, 406546, 464624, 572600, 580780, 725975, 813092, 1016365, 1145200, 1161560, 1451950, 1626184, 2032730, 2323120, 2903900, 3252368, 4065460, 5081825, 5807800, 8130920, 10163650, 11615600, 16261840, 20327300, 40654600, 81309200]

約数ペア:

[(1, 81309200), (2, 40654600), (4, 20327300), (5, 16261840), (7, 11615600), (8, 10163650), (10, 8130920), (14, 5807800), (16, 5081825), (20, 4065460), (25, 3252368), (28, 2903900), (35, 2323120), (40, 2032730), (50, 1626184), (56, 1451950), (70, 1161560), (71, 1145200), (80, 1016365), (100, 813092), (112, 725975), (140, 580780), (142, 572600), (175, 464624), (200, 406546), (280, 290390), (284, 286300), (350, 232312), (355, 229040), (400, 203273), (409, 198800), (497, 163600), (560, 145195), (568, 143150), (700, 116156), (710, 114520), (818, 99400), (994, 81800), (1136, 71575), (1400, 58078), (1420, 57260), (1636, 49700), (1775, 45808), (1988, 40900), (2045, 39760), (2485, 32720), (2800, 29039), (2840, 28630), (2863, 28400), (3272, 24850), (3550, 22904), (3976, 20450), (4090, 19880), (4970, 16360), (5680, 14315), (5726, 14200), (6544, 12425), (7100, 11452), (7952, 10225), (8180, 9940)]