667942743

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{257}}^1\times {\mathrm{647}}^1$

素因数の和:1023

約数の個数: 32

約数和(自身を含む): 973679616

約数和(自身を除く): 305736873

約数列:

[1, 3, 13, 39, 103, 257, 309, 647, 771, 1339, 1941, 3341, 4017, 8411, 10023, 25233, 26471, 66641, 79413, 166279, 199923, 344123, 498837, 866333, 1032369, 2161627, 2598999, 6484881, 17126737, 51380211, 222647581, 667942743]

約数ペア:

[(1, 667942743), (3, 222647581), (13, 51380211), (39, 17126737), (103, 6484881), (257, 2598999), (309, 2161627), (647, 1032369), (771, 866333), (1339, 498837), (1941, 344123), (3341, 199923), (4017, 166279), (8411, 79413), (10023, 66641), (25233, 26471)]