21695427628

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{668539}}^1$

素因数の和:668630

約数の個数: 48

約数和(自身を含む): 46423417600

約数和(自身を除く): 24727989972

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 61, 76, 122, 133, 244, 266, 427, 532, 854, 1159, 1708, 2318, 4636, 8113, 16226, 32452, 668539, 1337078, 2674156, 4679773, 9359546, 12702241, 18719092, 25404482, 40780879, 50808964, 81561758, 88915687, 163123516, 177831374, 285466153, 355662748, 570932306, 774836701, 1141864612, 1549673402, 3099346804, 5423856907, 10847713814, 21695427628]

約数ペア:

[(1, 21695427628), (2, 10847713814), (4, 5423856907), (7, 3099346804), (14, 1549673402), (19, 1141864612), (28, 774836701), (38, 570932306), (61, 355662748), (76, 285466153), (122, 177831374), (133, 163123516), (244, 88915687), (266, 81561758), (427, 50808964), (532, 40780879), (854, 25404482), (1159, 18719092), (1708, 12702241), (2318, 9359546), (4636, 4679773), (8113, 2674156), (16226, 1337078), (32452, 668539)]