12887980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13151}}^1$

素因数の和:13174

約数の個数: 36

約数和(自身を含む): 31485888

約数和(自身を除く): 18597908

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 13151, 26302, 52604, 65755, 92057, 131510, 184114, 263020, 368228, 460285, 644399, 920570, 1288798, 1841140, 2577596, 3221995, 6443990, 12887980]

約数ペア:

[(1, 12887980), (2, 6443990), (4, 3221995), (5, 2577596), (7, 1841140), (10, 1288798), (14, 920570), (20, 644399), (28, 460285), (35, 368228), (49, 263020), (70, 184114), (98, 131510), (140, 92057), (196, 65755), (245, 52604), (490, 26302), (980, 13151)]