31322780

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{457}}^1$

素因数の和:638

約数の個数: 48

約数和(自身を含む): 69249600

約数和(自身を除く): 37926820

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 149, 230, 298, 457, 460, 596, 745, 914, 1490, 1828, 2285, 2980, 3427, 4570, 6854, 9140, 10511, 13708, 17135, 21022, 34270, 42044, 52555, 68093, 68540, 105110, 136186, 210220, 272372, 340465, 680930, 1361860, 1566139, 3132278, 6264556, 7830695, 15661390, 31322780]

約数ペア:

[(1, 31322780), (2, 15661390), (4, 7830695), (5, 6264556), (10, 3132278), (20, 1566139), (23, 1361860), (46, 680930), (92, 340465), (115, 272372), (149, 210220), (230, 136186), (298, 105110), (457, 68540), (460, 68093), (596, 52555), (745, 42044), (914, 34270), (1490, 21022), (1828, 17135), (2285, 13708), (2980, 10511), (3427, 9140), (4570, 6854)]