20003390

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{563}}^1$

素因数の和:617

約数の個数: 64

約数和(自身を含む): 43856640

約数和(自身を除く): 23853250

約数列:

[1, 2, 5, 10, 11, 17, 19, 22, 34, 38, 55, 85, 95, 110, 170, 187, 190, 209, 323, 374, 418, 563, 646, 935, 1045, 1126, 1615, 1870, 2090, 2815, 3230, 3553, 5630, 6193, 7106, 9571, 10697, 12386, 17765, 19142, 21394, 30965, 35530, 47855, 53485, 61930, 95710, 105281, 106970, 117667, 181849, 210562, 235334, 363698, 526405, 588335, 909245, 1052810, 1176670, 1818490, 2000339, 4000678, 10001695, 20003390]

約数ペア:

[(1, 20003390), (2, 10001695), (5, 4000678), (10, 2000339), (11, 1818490), (17, 1176670), (19, 1052810), (22, 909245), (34, 588335), (38, 526405), (55, 363698), (85, 235334), (95, 210562), (110, 181849), (170, 117667), (187, 106970), (190, 105281), (209, 95710), (323, 61930), (374, 53485), (418, 47855), (563, 35530), (646, 30965), (935, 21394), (1045, 19142), (1126, 17765), (1615, 12386), (1870, 10697), (2090, 9571), (2815, 7106), (3230, 6193), (3553, 5630)]