31791221

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{619}}^1$

素因数の和:689

約数の個数: 32

約数和(自身を含む): 42854400

約数和(自身を除く): 11063179

約数列:

[1, 7, 11, 23, 29, 77, 161, 203, 253, 319, 619, 667, 1771, 2233, 4333, 4669, 6809, 7337, 14237, 17951, 47663, 51359, 99659, 125657, 156607, 197461, 412873, 1096249, 1382227, 2890111, 4541603, 31791221]

約数ペア:

[(1, 31791221), (7, 4541603), (11, 2890111), (23, 1382227), (29, 1096249), (77, 412873), (161, 197461), (203, 156607), (253, 125657), (319, 99659), (619, 51359), (667, 47663), (1771, 17951), (2233, 14237), (4333, 7337), (4669, 6809)]