21231660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{5801}}^1$

素因数の和:5874

約数の個数: 48

約数和(自身を含む): 60433632

約数和(自身を除く): 39201972

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 61, 122, 183, 244, 305, 366, 610, 732, 915, 1220, 1830, 3660, 5801, 11602, 17403, 23204, 29005, 34806, 58010, 69612, 87015, 116020, 174030, 348060, 353861, 707722, 1061583, 1415444, 1769305, 2123166, 3538610, 4246332, 5307915, 7077220, 10615830, 21231660]

約数ペア:

[(1, 21231660), (2, 10615830), (3, 7077220), (4, 5307915), (5, 4246332), (6, 3538610), (10, 2123166), (12, 1769305), (15, 1415444), (20, 1061583), (30, 707722), (60, 353861), (61, 348060), (122, 174030), (183, 116020), (244, 87015), (305, 69612), (366, 58010), (610, 34806), (732, 29005), (915, 23204), (1220, 17403), (1830, 11602), (3660, 5801)]