81691810

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1\times {\mathrm{853}}^1$

素因数の和:1078

約数の個数: 32

約数和(自身を含む): 150584112

約数和(自身を除く): 68892302

約数列:

[1, 2, 5, 10, 61, 122, 157, 305, 314, 610, 785, 853, 1570, 1706, 4265, 8530, 9577, 19154, 47885, 52033, 95770, 104066, 133921, 260165, 267842, 520330, 669605, 1339210, 8169181, 16338362, 40845905, 81691810]

約数ペア:

[(1, 81691810), (2, 40845905), (5, 16338362), (10, 8169181), (61, 1339210), (122, 669605), (157, 520330), (305, 267842), (314, 260165), (610, 133921), (785, 104066), (853, 95770), (1570, 52033), (1706, 47885), (4265, 19154), (8530, 9577)]