20801250

素因数分解:

$2^1\times 3^2\times 5^4\times {\mathrm{43}}^2$

素因数の和:114

約数の個数: 90

約数和(自身を含む): 57658887

約数和(自身を除く): 36857637

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 43, 45, 50, 75, 86, 90, 125, 129, 150, 215, 225, 250, 258, 375, 387, 430, 450, 625, 645, 750, 774, 1075, 1125, 1250, 1290, 1849, 1875, 1935, 2150, 2250, 3225, 3698, 3750, 3870, 5375, 5547, 5625, 6450, 9245, 9675, 10750, 11094, 11250, 16125, 16641, 18490, 19350, 26875, 27735, 32250, 33282, 46225, 48375, 53750, 55470, 80625, 83205, 92450, 96750, 138675, 161250, 166410, 231125, 241875, 277350, 416025, 462250, 483750, 693375, 832050, 1155625, 1386750, 2080125, 2311250, 3466875, 4160250, 6933750, 10400625, 20801250]

約数ペア:

[(1, 20801250), (2, 10400625), (3, 6933750), (5, 4160250), (6, 3466875), (9, 2311250), (10, 2080125), (15, 1386750), (18, 1155625), (25, 832050), (30, 693375), (43, 483750), (45, 462250), (50, 416025), (75, 277350), (86, 241875), (90, 231125), (125, 166410), (129, 161250), (150, 138675), (215, 96750), (225, 92450), (250, 83205), (258, 80625), (375, 55470), (387, 53750), (430, 48375), (450, 46225), (625, 33282), (645, 32250), (750, 27735), (774, 26875), (1075, 19350), (1125, 18490), (1250, 16641), (1290, 16125), (1849, 11250), (1875, 11094), (1935, 10750), (2150, 9675), (2250, 9245), (3225, 6450), (3698, 5625), (3750, 5547), (3870, 5375)]