18218996890

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1031}}^1\times {\mathrm{24889}}^1$

素因数の和:25998

約数の個数: 32

約数和(自身を含む): 33289678080

約数和(自身を除く): 15070681190

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 1031, 2062, 5155, 10310, 24889, 49778, 73201, 124445, 146402, 248890, 366005, 732010, 1767119, 3534238, 8835595, 17671190, 25660559, 51321118, 128302795, 256605590, 1821899689, 3643799378, 9109498445, 18218996890]

約数ペア:

[(1, 18218996890), (2, 9109498445), (5, 3643799378), (10, 1821899689), (71, 256605590), (142, 128302795), (355, 51321118), (710, 25660559), (1031, 17671190), (2062, 8835595), (5155, 3534238), (10310, 1767119), (24889, 732010), (49778, 366005), (73201, 248890), (124445, 146402)]