21176527490

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{433}}^1\times {\mathrm{1997}}^1$

素因数の和:2547

約数の個数: 64

約数和(自身を含む): 39957442560

約数和(自身を除く): 18780915070

約数列:

[1, 2, 5, 10, 31, 62, 79, 155, 158, 310, 395, 433, 790, 866, 1997, 2165, 2449, 3994, 4330, 4898, 9985, 12245, 13423, 19970, 24490, 26846, 34207, 61907, 67115, 68414, 123814, 134230, 157763, 171035, 309535, 315526, 342070, 619070, 788815, 864701, 1060417, 1577630, 1729402, 2120834, 4323505, 4890653, 5302085, 8647010, 9781306, 10604170, 24453265, 26805731, 48906530, 53611462, 68311379, 134028655, 136622758, 268057310, 341556895, 683113790, 2117652749, 4235305498, 10588263745, 21176527490]

約数ペア:

[(1, 21176527490), (2, 10588263745), (5, 4235305498), (10, 2117652749), (31, 683113790), (62, 341556895), (79, 268057310), (155, 136622758), (158, 134028655), (310, 68311379), (395, 53611462), (433, 48906530), (790, 26805731), (866, 24453265), (1997, 10604170), (2165, 9781306), (2449, 8647010), (3994, 5302085), (4330, 4890653), (4898, 4323505), (9985, 2120834), (12245, 1729402), (13423, 1577630), (19970, 1060417), (24490, 864701), (26846, 788815), (34207, 619070), (61907, 342070), (67115, 315526), (68414, 309535), (123814, 171035), (134230, 157763)]