81465730

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{2731}}^1$

素因数の和:2914

約数の個数: 32

約数和(自身を含む): 155396160

約数和(自身を除く): 73930430

約数列:

[1, 2, 5, 10, 19, 38, 95, 157, 190, 314, 785, 1570, 2731, 2983, 5462, 5966, 13655, 14915, 27310, 29830, 51889, 103778, 259445, 428767, 518890, 857534, 2143835, 4287670, 8146573, 16293146, 40732865, 81465730]

約数ペア:

[(1, 81465730), (2, 40732865), (5, 16293146), (10, 8146573), (19, 4287670), (38, 2143835), (95, 857534), (157, 518890), (190, 428767), (314, 259445), (785, 103778), (1570, 51889), (2731, 29830), (2983, 27310), (5462, 14915), (5966, 13655)]