20057145

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{509}}^1$

素因数の和:625

約数の個数: 32

約数和(自身を含む): 33488640

約数和(自身を除く): 13431495

約数列:

[1, 3, 5, 15, 37, 71, 111, 185, 213, 355, 509, 555, 1065, 1527, 2545, 2627, 7635, 7881, 13135, 18833, 36139, 39405, 56499, 94165, 108417, 180695, 282495, 542085, 1337143, 4011429, 6685715, 20057145]

約数ペア:

[(1, 20057145), (3, 6685715), (5, 4011429), (15, 1337143), (37, 542085), (71, 282495), (111, 180695), (185, 108417), (213, 94165), (355, 56499), (509, 39405), (555, 36139), (1065, 18833), (1527, 13135), (2545, 7881), (2627, 7635)]