21515060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{227}}^1\times {\mathrm{677}}^1$

素因数の和:920

約数の個数: 48

約数和(自身を含む): 51940224

約数和(自身を除く): 30425164

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 227, 454, 677, 908, 1135, 1354, 1589, 2270, 2708, 3178, 3385, 4540, 4739, 6356, 6770, 7945, 9478, 13540, 15890, 18956, 23695, 31780, 47390, 94780, 153679, 307358, 614716, 768395, 1075753, 1536790, 2151506, 3073580, 4303012, 5378765, 10757530, 21515060]

約数ペア:

[(1, 21515060), (2, 10757530), (4, 5378765), (5, 4303012), (7, 3073580), (10, 2151506), (14, 1536790), (20, 1075753), (28, 768395), (35, 614716), (70, 307358), (140, 153679), (227, 94780), (454, 47390), (677, 31780), (908, 23695), (1135, 18956), (1354, 15890), (1589, 13540), (2270, 9478), (2708, 7945), (3178, 6770), (3385, 6356), (4540, 4739)]