81257995

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{271}}^1\times {\mathrm{659}}^1$

素因数の和:955

約数の個数: 32

約数和(自身を含む): 120637440

約数和(自身を除く): 39379445

約数列:

[1, 5, 7, 13, 35, 65, 91, 271, 455, 659, 1355, 1897, 3295, 3523, 4613, 8567, 9485, 17615, 23065, 24661, 42835, 59969, 123305, 178589, 299845, 892945, 1250123, 2321657, 6250615, 11608285, 16251599, 81257995]

約数ペア:

[(1, 81257995), (5, 16251599), (7, 11608285), (13, 6250615), (35, 2321657), (65, 1250123), (91, 892945), (271, 299845), (455, 178589), (659, 123305), (1355, 59969), (1897, 42835), (3295, 24661), (3523, 23065), (4613, 17615), (8567, 9485)]