20874840

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{24851}}^1$

素因数の和:24872

約数の個数: 64

約数和(自身を含む): 71573760

約数和(自身を除く): 50698920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 24851, 49702, 74553, 99404, 124255, 149106, 173957, 198808, 248510, 298212, 347914, 372765, 497020, 521871, 596424, 695828, 745530, 869785, 994040, 1043742, 1391656, 1491060, 1739570, 2087484, 2609355, 2982120, 3479140, 4174968, 5218710, 6958280, 10437420, 20874840]

約数ペア:

[(1, 20874840), (2, 10437420), (3, 6958280), (4, 5218710), (5, 4174968), (6, 3479140), (7, 2982120), (8, 2609355), (10, 2087484), (12, 1739570), (14, 1491060), (15, 1391656), (20, 1043742), (21, 994040), (24, 869785), (28, 745530), (30, 695828), (35, 596424), (40, 521871), (42, 497020), (56, 372765), (60, 347914), (70, 298212), (84, 248510), (105, 198808), (120, 173957), (140, 149106), (168, 124255), (210, 99404), (280, 74553), (420, 49702), (840, 24851)]