3997940

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{113}}^1$

素因数の和:212

約数の個数: 48

約数和(自身を含む): 8905680

約数和(自身を除く): 4907740

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 61, 113, 116, 122, 145, 226, 244, 290, 305, 452, 565, 580, 610, 1130, 1220, 1769, 2260, 3277, 3538, 6554, 6893, 7076, 8845, 13108, 13786, 16385, 17690, 27572, 32770, 34465, 35380, 65540, 68930, 137860, 199897, 399794, 799588, 999485, 1998970, 3997940]

約数ペア:

[(1, 3997940), (2, 1998970), (4, 999485), (5, 799588), (10, 399794), (20, 199897), (29, 137860), (58, 68930), (61, 65540), (113, 35380), (116, 34465), (122, 32770), (145, 27572), (226, 17690), (244, 16385), (290, 13786), (305, 13108), (452, 8845), (565, 7076), (580, 6893), (610, 6554), (1130, 3538), (1220, 3277), (1769, 2260)]