21858160

素因数分解:

$2^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1373}}^1$

素因数の和:1585

約数の個数: 40

約数和(自身を含む): 51112800

約数和(自身を除く): 29254640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199, 398, 796, 995, 1373, 1592, 1990, 2746, 3184, 3980, 5492, 6865, 7960, 10984, 13730, 15920, 21968, 27460, 54920, 109840, 273227, 546454, 1092908, 1366135, 2185816, 2732270, 4371632, 5464540, 10929080, 21858160]

約数ペア:

[(1, 21858160), (2, 10929080), (4, 5464540), (5, 4371632), (8, 2732270), (10, 2185816), (16, 1366135), (20, 1092908), (40, 546454), (80, 273227), (199, 109840), (398, 54920), (796, 27460), (995, 21968), (1373, 15920), (1592, 13730), (1990, 10984), (2746, 7960), (3184, 6865), (3980, 5492)]