1999790470

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{4651}}^1$

素因数の和:4781

約数の個数: 64

約数和(自身を含む): 3965736960

約数和(自身を除く): 1965946490

約数列:

[1, 2, 5, 10, 19, 31, 38, 62, 73, 95, 146, 155, 190, 310, 365, 589, 730, 1178, 1387, 2263, 2774, 2945, 4526, 4651, 5890, 6935, 9302, 11315, 13870, 22630, 23255, 42997, 46510, 85994, 88369, 144181, 176738, 214985, 288362, 339523, 429970, 441845, 679046, 720905, 883690, 1441810, 1697615, 2739439, 3395230, 5478878, 6450937, 10525213, 12901874, 13697195, 21050426, 27394390, 32254685, 52626065, 64509370, 105252130, 199979047, 399958094, 999895235, 1999790470]

約数ペア:

[(1, 1999790470), (2, 999895235), (5, 399958094), (10, 199979047), (19, 105252130), (31, 64509370), (38, 52626065), (62, 32254685), (73, 27394390), (95, 21050426), (146, 13697195), (155, 12901874), (190, 10525213), (310, 6450937), (365, 5478878), (589, 3395230), (730, 2739439), (1178, 1697615), (1387, 1441810), (2263, 883690), (2774, 720905), (2945, 679046), (4526, 441845), (4651, 429970), (5890, 339523), (6935, 288362), (9302, 214985), (11315, 176738), (13870, 144181), (22630, 88369), (23255, 85994), (42997, 46510)]