71755240

素因数分解:

$2^3\times 5^1\times {\mathrm{421}}^1\times {\mathrm{4261}}^1$

素因数の和:4693

約数の個数: 32

約数和(自身を含む): 161870760

約数和(自身を除く): 90115520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 421, 842, 1684, 2105, 3368, 4210, 4261, 8420, 8522, 16840, 17044, 21305, 34088, 42610, 85220, 170440, 1793881, 3587762, 7175524, 8969405, 14351048, 17938810, 35877620, 71755240]

約数ペア:

[(1, 71755240), (2, 35877620), (4, 17938810), (5, 14351048), (8, 8969405), (10, 7175524), (20, 3587762), (40, 1793881), (421, 170440), (842, 85220), (1684, 42610), (2105, 34088), (3368, 21305), (4210, 17044), (4261, 16840), (8420, 8522)]