90131890

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{271}}^1\times {\mathrm{421}}^1$

素因数の和:778

約数の個数: 32

約数和(自身を含む): 165288960

約数和(自身を除く): 75157070

約数列:

[1, 2, 5, 10, 79, 158, 271, 395, 421, 542, 790, 842, 1355, 2105, 2710, 4210, 21409, 33259, 42818, 66518, 107045, 114091, 166295, 214090, 228182, 332590, 570455, 1140910, 9013189, 18026378, 45065945, 90131890]

約数ペア:

[(1, 90131890), (2, 45065945), (5, 18026378), (10, 9013189), (79, 1140910), (158, 570455), (271, 332590), (395, 228182), (421, 214090), (542, 166295), (790, 114091), (842, 107045), (1355, 66518), (2105, 42818), (2710, 33259), (4210, 21409)]