20878500

素因数分解:

$2^2\times 3^1\times 5^3\times {\mathrm{31}}^1\times {\mathrm{449}}^1$

素因数の和:502

約数の個数: 96

約数和(自身を含む): 62899200

約数和(自身を除く): 42020700

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 31, 50, 60, 62, 75, 93, 100, 124, 125, 150, 155, 186, 250, 300, 310, 372, 375, 449, 465, 500, 620, 750, 775, 898, 930, 1347, 1500, 1550, 1796, 1860, 2245, 2325, 2694, 3100, 3875, 4490, 4650, 5388, 6735, 7750, 8980, 9300, 11225, 11625, 13470, 13919, 15500, 22450, 23250, 26940, 27838, 33675, 41757, 44900, 46500, 55676, 56125, 67350, 69595, 83514, 112250, 134700, 139190, 167028, 168375, 208785, 224500, 278380, 336750, 347975, 417570, 673500, 695950, 835140, 1043925, 1391900, 1739875, 2087850, 3479750, 4175700, 5219625, 6959500, 10439250, 20878500]

約数ペア:

[(1, 20878500), (2, 10439250), (3, 6959500), (4, 5219625), (5, 4175700), (6, 3479750), (10, 2087850), (12, 1739875), (15, 1391900), (20, 1043925), (25, 835140), (30, 695950), (31, 673500), (50, 417570), (60, 347975), (62, 336750), (75, 278380), (93, 224500), (100, 208785), (124, 168375), (125, 167028), (150, 139190), (155, 134700), (186, 112250), (250, 83514), (300, 69595), (310, 67350), (372, 56125), (375, 55676), (449, 46500), (465, 44900), (500, 41757), (620, 33675), (750, 27838), (775, 26940), (898, 23250), (930, 22450), (1347, 15500), (1500, 13919), (1550, 13470), (1796, 11625), (1860, 11225), (2245, 9300), (2325, 8980), (2694, 7750), (3100, 6735), (3875, 5388), (4490, 4650)]