13020440

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{1997}}^1$

素因数の和:2171

約数の個数: 32

約数和(自身を含む): 29490480

約数和(自身を除く): 16470040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 1997, 3260, 3994, 6520, 7988, 9985, 15976, 19970, 39940, 79880, 325511, 651022, 1302044, 1627555, 2604088, 3255110, 6510220, 13020440]

約数ペア:

[(1, 13020440), (2, 6510220), (4, 3255110), (5, 2604088), (8, 1627555), (10, 1302044), (20, 651022), (40, 325511), (163, 79880), (326, 39940), (652, 19970), (815, 15976), (1304, 9985), (1630, 7988), (1997, 6520), (3260, 3994)]