81151655

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1\times {\mathrm{211}}^1$

素因数の和:387

約数の個数: 32

約数和(自身を含む): 108201408

約数和(自身を除く): 27049753

約数列:

[1, 5, 13, 61, 65, 97, 211, 305, 485, 793, 1055, 1261, 2743, 3965, 5917, 6305, 12871, 13715, 20467, 29585, 64355, 76921, 102335, 167323, 266071, 384605, 836615, 1248487, 1330355, 6242435, 16230331, 81151655]

約数ペア:

[(1, 81151655), (5, 16230331), (13, 6242435), (61, 1330355), (65, 1248487), (97, 836615), (211, 384605), (305, 266071), (485, 167323), (793, 102335), (1055, 76921), (1261, 64355), (2743, 29585), (3965, 20467), (5917, 13715), (6305, 12871)]