20565400

素因数分解:

$2^3\times 5^2\times {\mathrm{31}}^2\times {\mathrm{107}}^1$

素因数の和:185

約数の個数: 72

約数和(自身を含む): 49868460

約数和(自身を除く): 29303060

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 107, 124, 155, 200, 214, 248, 310, 428, 535, 620, 775, 856, 961, 1070, 1240, 1550, 1922, 2140, 2675, 3100, 3317, 3844, 4280, 4805, 5350, 6200, 6634, 7688, 9610, 10700, 13268, 16585, 19220, 21400, 24025, 26536, 33170, 38440, 48050, 66340, 82925, 96100, 102827, 132680, 165850, 192200, 205654, 331700, 411308, 514135, 663400, 822616, 1028270, 2056540, 2570675, 4113080, 5141350, 10282700, 20565400]

約数ペア:

[(1, 20565400), (2, 10282700), (4, 5141350), (5, 4113080), (8, 2570675), (10, 2056540), (20, 1028270), (25, 822616), (31, 663400), (40, 514135), (50, 411308), (62, 331700), (100, 205654), (107, 192200), (124, 165850), (155, 132680), (200, 102827), (214, 96100), (248, 82925), (310, 66340), (428, 48050), (535, 38440), (620, 33170), (775, 26536), (856, 24025), (961, 21400), (1070, 19220), (1240, 16585), (1550, 13268), (1922, 10700), (2140, 9610), (2675, 7688), (3100, 6634), (3317, 6200), (3844, 5350), (4280, 4805)]