21725660

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1$

素因数の和:231

約数の個数: 96

約数和(自身を含む): 54468288

約数和(自身を除く): 32742628

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 37, 44, 55, 68, 74, 85, 110, 148, 157, 170, 185, 187, 220, 314, 340, 370, 374, 407, 628, 629, 740, 748, 785, 814, 935, 1258, 1570, 1628, 1727, 1870, 2035, 2516, 2669, 3140, 3145, 3454, 3740, 4070, 5338, 5809, 6290, 6908, 6919, 8140, 8635, 10676, 11618, 12580, 13345, 13838, 17270, 23236, 26690, 27676, 29045, 29359, 34540, 34595, 53380, 58090, 58718, 63899, 69190, 98753, 116180, 117436, 127798, 138380, 146795, 197506, 255596, 293590, 319495, 395012, 493765, 587180, 638990, 987530, 1086283, 1277980, 1975060, 2172566, 4345132, 5431415, 10862830, 21725660]

約数ペア:

[(1, 21725660), (2, 10862830), (4, 5431415), (5, 4345132), (10, 2172566), (11, 1975060), (17, 1277980), (20, 1086283), (22, 987530), (34, 638990), (37, 587180), (44, 493765), (55, 395012), (68, 319495), (74, 293590), (85, 255596), (110, 197506), (148, 146795), (157, 138380), (170, 127798), (185, 117436), (187, 116180), (220, 98753), (314, 69190), (340, 63899), (370, 58718), (374, 58090), (407, 53380), (628, 34595), (629, 34540), (740, 29359), (748, 29045), (785, 27676), (814, 26690), (935, 23236), (1258, 17270), (1570, 13838), (1628, 13345), (1727, 12580), (1870, 11618), (2035, 10676), (2516, 8635), (2669, 8140), (3140, 6919), (3145, 6908), (3454, 6290), (3740, 5809), (4070, 5338)]