20327300

素因数分解:

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

素因数の和:501

約数の個数: 72

約数和(自身を含む): 51246720

約数和(自身を除く): 30919420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 71, 100, 140, 142, 175, 284, 350, 355, 409, 497, 700, 710, 818, 994, 1420, 1636, 1775, 1988, 2045, 2485, 2863, 3550, 4090, 4970, 5726, 7100, 8180, 9940, 10225, 11452, 12425, 14315, 20450, 24850, 28630, 29039, 40900, 49700, 57260, 58078, 71575, 116156, 143150, 145195, 203273, 286300, 290390, 406546, 580780, 725975, 813092, 1016365, 1451950, 2032730, 2903900, 4065460, 5081825, 10163650, 20327300]

約数ペア:

[(1, 20327300), (2, 10163650), (4, 5081825), (5, 4065460), (7, 2903900), (10, 2032730), (14, 1451950), (20, 1016365), (25, 813092), (28, 725975), (35, 580780), (50, 406546), (70, 290390), (71, 286300), (100, 203273), (140, 145195), (142, 143150), (175, 116156), (284, 71575), (350, 58078), (355, 57260), (409, 49700), (497, 40900), (700, 29039), (710, 28630), (818, 24850), (994, 20450), (1420, 14315), (1636, 12425), (1775, 11452), (1988, 10225), (2045, 9940), (2485, 8180), (2863, 7100), (3550, 5726), (4090, 4970)]