31980104

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^2$

素因数の和:222

約数の個数: 48

約数和(自身を含む): 66571260

約数和(自身を除く): 34591156

約数列:

[1, 2, 4, 8, 13, 26, 52, 61, 71, 104, 122, 142, 244, 284, 488, 568, 793, 923, 1586, 1846, 3172, 3692, 4331, 5041, 6344, 7384, 8662, 10082, 17324, 20164, 34648, 40328, 56303, 65533, 112606, 131066, 225212, 262132, 307501, 450424, 524264, 615002, 1230004, 2460008, 3997513, 7995026, 15990052, 31980104]

約数ペア:

[(1, 31980104), (2, 15990052), (4, 7995026), (8, 3997513), (13, 2460008), (26, 1230004), (52, 615002), (61, 524264), (71, 450424), (104, 307501), (122, 262132), (142, 225212), (244, 131066), (284, 112606), (488, 65533), (568, 56303), (793, 40328), (923, 34648), (1586, 20164), (1846, 17324), (3172, 10082), (3692, 8662), (4331, 7384), (5041, 6344)]