19917960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{165983}}^1$

素因数の和:165997

約数の個数: 32

約数和(自身を含む): 59754240

約数和(自身を除く): 39836280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 165983, 331966, 497949, 663932, 829915, 995898, 1327864, 1659830, 1991796, 2489745, 3319660, 3983592, 4979490, 6639320, 9958980, 19917960]

約数ペア:

[(1, 19917960), (2, 9958980), (3, 6639320), (4, 4979490), (5, 3983592), (6, 3319660), (8, 2489745), (10, 1991796), (12, 1659830), (15, 1327864), (20, 995898), (24, 829915), (30, 663932), (40, 497949), (60, 331966), (120, 165983)]