21255355

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{179}}^1$

素因数の和:339

約数の個数: 32

約数和(自身を含む): 29859840

約数和(自身を除く): 8604485

約数列:

[1, 5, 11, 17, 55, 85, 127, 179, 187, 635, 895, 935, 1397, 1969, 2159, 3043, 6985, 9845, 10795, 15215, 22733, 23749, 33473, 113665, 118745, 167365, 250063, 386461, 1250315, 1932305, 4251071, 21255355]

約数ペア:

[(1, 21255355), (5, 4251071), (11, 1932305), (17, 1250315), (55, 386461), (85, 250063), (127, 167365), (179, 118745), (187, 113665), (635, 33473), (895, 23749), (935, 22733), (1397, 15215), (1969, 10795), (2159, 9845), (3043, 6985)]