20050180

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{443}}^1$

素因数の和:556

約数の個数: 48

約数和(自身を含む): 44158464

約数和(自身を除く): 24108284

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 73, 124, 146, 155, 292, 310, 365, 443, 620, 730, 886, 1460, 1772, 2215, 2263, 4430, 4526, 8860, 9052, 11315, 13733, 22630, 27466, 32339, 45260, 54932, 64678, 68665, 129356, 137330, 161695, 274660, 323390, 646780, 1002509, 2005018, 4010036, 5012545, 10025090, 20050180]

約数ペア:

[(1, 20050180), (2, 10025090), (4, 5012545), (5, 4010036), (10, 2005018), (20, 1002509), (31, 646780), (62, 323390), (73, 274660), (124, 161695), (146, 137330), (155, 129356), (292, 68665), (310, 64678), (365, 54932), (443, 45260), (620, 32339), (730, 27466), (886, 22630), (1460, 13733), (1772, 11315), (2215, 9052), (2263, 8860), (4430, 4526)]