155980180

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{39191}}^1$

素因数の和:39399

約数の個数: 24

約数和(自身を含む): 329212800

約数和(自身を除く): 173232620

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 39191, 78382, 156764, 195955, 391910, 783820, 7799009, 15598018, 31196036, 38995045, 77990090, 155980180]

約数ペア:

[(1, 155980180), (2, 77990090), (4, 38995045), (5, 31196036), (10, 15598018), (20, 7799009), (199, 783820), (398, 391910), (796, 195955), (995, 156764), (1990, 78382), (3980, 39191)]