20808750

素因数分解:

$2^1\times 3^1\times 5^4\times {\mathrm{31}}^1\times {\mathrm{179}}^1$

素因数の和:235

約数の個数: 80

約数和(自身を含む): 53982720

約数和(自身を除く): 33173970

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 31, 50, 62, 75, 93, 125, 150, 155, 179, 186, 250, 310, 358, 375, 465, 537, 625, 750, 775, 895, 930, 1074, 1250, 1550, 1790, 1875, 2325, 2685, 3750, 3875, 4475, 4650, 5370, 5549, 7750, 8950, 11098, 11625, 13425, 16647, 19375, 22375, 23250, 26850, 27745, 33294, 38750, 44750, 55490, 58125, 67125, 83235, 111875, 116250, 134250, 138725, 166470, 223750, 277450, 335625, 416175, 671250, 693625, 832350, 1387250, 2080875, 3468125, 4161750, 6936250, 10404375, 20808750]

約数ペア:

[(1, 20808750), (2, 10404375), (3, 6936250), (5, 4161750), (6, 3468125), (10, 2080875), (15, 1387250), (25, 832350), (30, 693625), (31, 671250), (50, 416175), (62, 335625), (75, 277450), (93, 223750), (125, 166470), (150, 138725), (155, 134250), (179, 116250), (186, 111875), (250, 83235), (310, 67125), (358, 58125), (375, 55490), (465, 44750), (537, 38750), (625, 33294), (750, 27745), (775, 26850), (895, 23250), (930, 22375), (1074, 19375), (1250, 16647), (1550, 13425), (1790, 11625), (1875, 11098), (2325, 8950), (2685, 7750), (3750, 5549), (3875, 5370), (4475, 4650)]