20151280

素因数分解:

$2^4\times 5^1\times {\mathrm{331}}^1\times {\mathrm{761}}^1$

素因数の和:1105

約数の個数: 40

約数和(自身を含む): 47055024

約数和(自身を除く): 26903744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 331, 662, 761, 1324, 1522, 1655, 2648, 3044, 3310, 3805, 5296, 6088, 6620, 7610, 12176, 13240, 15220, 26480, 30440, 60880, 251891, 503782, 1007564, 1259455, 2015128, 2518910, 4030256, 5037820, 10075640, 20151280]

約数ペア:

[(1, 20151280), (2, 10075640), (4, 5037820), (5, 4030256), (8, 2518910), (10, 2015128), (16, 1259455), (20, 1007564), (40, 503782), (80, 251891), (331, 60880), (662, 30440), (761, 26480), (1324, 15220), (1522, 13240), (1655, 12176), (2648, 7610), (3044, 6620), (3310, 6088), (3805, 5296)]