661691807

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{233}}^1\times {\mathrm{569}}^1$

素因数の和:863

約数の個数: 32

約数和(自身を含む): 819486720

約数和(自身を除く): 157794913

約数列:

[1, 7, 23, 31, 161, 217, 233, 569, 713, 1631, 3983, 4991, 5359, 7223, 13087, 17639, 37513, 50561, 91609, 123473, 132577, 166129, 405697, 928039, 1162903, 2839879, 3049271, 4109887, 21344897, 28769209, 94527401, 661691807]

約数ペア:

[(1, 661691807), (7, 94527401), (23, 28769209), (31, 21344897), (161, 4109887), (217, 3049271), (233, 2839879), (569, 1162903), (713, 928039), (1631, 405697), (3983, 166129), (4991, 132577), (5359, 123473), (7223, 91609), (13087, 50561), (17639, 37513)]