21297640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5851}}^1$

素因数の和:5882

約数の個数: 64

約数和(自身を含む): 58988160

約数和(自身を除く): 37690520

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 5851, 11702, 23404, 29255, 40957, 46808, 58510, 76063, 81914, 117020, 152126, 163828, 204785, 234040, 304252, 327656, 380315, 409570, 532441, 608504, 760630, 819140, 1064882, 1521260, 1638280, 2129764, 2662205, 3042520, 4259528, 5324410, 10648820, 21297640]

約数ペア:

[(1, 21297640), (2, 10648820), (4, 5324410), (5, 4259528), (7, 3042520), (8, 2662205), (10, 2129764), (13, 1638280), (14, 1521260), (20, 1064882), (26, 819140), (28, 760630), (35, 608504), (40, 532441), (52, 409570), (56, 380315), (65, 327656), (70, 304252), (91, 234040), (104, 204785), (130, 163828), (140, 152126), (182, 117020), (260, 81914), (280, 76063), (364, 58510), (455, 46808), (520, 40957), (728, 29255), (910, 23404), (1820, 11702), (3640, 5851)]