661830

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1697}}^1$

素因数の和:1720

約数の個数: 32

約数和(自身を含む): 1711584

約数和(自身を除く): 1049754

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 1697, 3394, 5091, 8485, 10182, 16970, 22061, 25455, 44122, 50910, 66183, 110305, 132366, 220610, 330915, 661830]

約数ペア:

[(1, 661830), (2, 330915), (3, 220610), (5, 132366), (6, 110305), (10, 66183), (13, 50910), (15, 44122), (26, 25455), (30, 22061), (39, 16970), (65, 10182), (78, 8485), (130, 5091), (195, 3394), (390, 1697)]