20677415

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{421}}^1$

素因数の和:503

約数の個数: 32

約数和(自身を含む): 29168640

約数和(自身を除く): 8491225

約数列:

[1, 5, 11, 19, 47, 55, 95, 209, 235, 421, 517, 893, 1045, 2105, 2585, 4465, 4631, 7999, 9823, 19787, 23155, 39995, 49115, 87989, 98935, 217657, 375953, 439945, 1088285, 1879765, 4135483, 20677415]

約数ペア:

[(1, 20677415), (5, 4135483), (11, 1879765), (19, 1088285), (47, 439945), (55, 375953), (95, 217657), (209, 98935), (235, 87989), (421, 49115), (517, 39995), (893, 23155), (1045, 19787), (2105, 9823), (2585, 7999), (4465, 4631)]