128841890

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{5261}}^1$

素因数の和:5378

約数の個数: 32

約数和(自身を含む): 242472960

約数和(自身を除く): 113631070

約数列:

[1, 2, 5, 10, 31, 62, 79, 155, 158, 310, 395, 790, 2449, 4898, 5261, 10522, 12245, 24490, 26305, 52610, 163091, 326182, 415619, 815455, 831238, 1630910, 2078095, 4156190, 12884189, 25768378, 64420945, 128841890]

約数ペア:

[(1, 128841890), (2, 64420945), (5, 25768378), (10, 12884189), (31, 4156190), (62, 2078095), (79, 1630910), (155, 831238), (158, 815455), (310, 415619), (395, 326182), (790, 163091), (2449, 52610), (4898, 26305), (5261, 24490), (10522, 12245)]