21244795

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{691}}^1$

素因数の和:763

約数の個数: 32

約数和(自身を含む): 30691584

約数和(自身を除く): 9446789

約数列:

[1, 5, 11, 13, 43, 55, 65, 143, 215, 473, 559, 691, 715, 2365, 2795, 3455, 6149, 7601, 8983, 29713, 30745, 38005, 44915, 98813, 148565, 326843, 386269, 494065, 1634215, 1931345, 4248959, 21244795]

約数ペア:

[(1, 21244795), (5, 4248959), (11, 1931345), (13, 1634215), (43, 494065), (55, 386269), (65, 326843), (143, 148565), (215, 98813), (473, 44915), (559, 38005), (691, 30745), (715, 29713), (2365, 8983), (2795, 7601), (3455, 6149)]