15553840

素因数分解:

$2^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{977}}^1$

素因数の和:1189

約数の個数: 40

約数和(自身を含む): 36381600

約数和(自身を除く): 20827760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199, 398, 796, 977, 995, 1592, 1954, 1990, 3184, 3908, 3980, 4885, 7816, 7960, 9770, 15632, 15920, 19540, 39080, 78160, 194423, 388846, 777692, 972115, 1555384, 1944230, 3110768, 3888460, 7776920, 15553840]

約数ペア:

[(1, 15553840), (2, 7776920), (4, 3888460), (5, 3110768), (8, 1944230), (10, 1555384), (16, 972115), (20, 777692), (40, 388846), (80, 194423), (199, 78160), (398, 39080), (796, 19540), (977, 15920), (995, 15632), (1592, 9770), (1954, 7960), (1990, 7816), (3184, 4885), (3908, 3980)]