20875500

素因数分解:

$2^2\times 3^2\times 5^3\times {\mathrm{4639}}^1$

素因数の和:4664

約数の個数: 72

約数和(自身を含む): 65869440

約数和(自身を除く): 44993940

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 75, 90, 100, 125, 150, 180, 225, 250, 300, 375, 450, 500, 750, 900, 1125, 1500, 2250, 4500, 4639, 9278, 13917, 18556, 23195, 27834, 41751, 46390, 55668, 69585, 83502, 92780, 115975, 139170, 167004, 208755, 231950, 278340, 347925, 417510, 463900, 579875, 695850, 835020, 1043775, 1159750, 1391700, 1739625, 2087550, 2319500, 3479250, 4175100, 5218875, 6958500, 10437750, 20875500]

約数ペア:

[(1, 20875500), (2, 10437750), (3, 6958500), (4, 5218875), (5, 4175100), (6, 3479250), (9, 2319500), (10, 2087550), (12, 1739625), (15, 1391700), (18, 1159750), (20, 1043775), (25, 835020), (30, 695850), (36, 579875), (45, 463900), (50, 417510), (60, 347925), (75, 278340), (90, 231950), (100, 208755), (125, 167004), (150, 139170), (180, 115975), (225, 92780), (250, 83502), (300, 69585), (375, 55668), (450, 46390), (500, 41751), (750, 27834), (900, 23195), (1125, 18556), (1500, 13917), (2250, 9278), (4500, 4639)]