1805378920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{13477}}^1$

素因数の和:13702

約数の個数: 64

約数和(自身を含む): 4323203280

約数和(自身を除く): 2517824360

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 197, 340, 394, 680, 788, 985, 1576, 1970, 3349, 3940, 6698, 7880, 13396, 13477, 16745, 26792, 26954, 33490, 53908, 66980, 67385, 107816, 133960, 134770, 229109, 269540, 458218, 539080, 916436, 1145545, 1832872, 2291090, 2654969, 4582180, 5309938, 9164360, 10619876, 13274845, 21239752, 26549690, 45134473, 53099380, 90268946, 106198760, 180537892, 225672365, 361075784, 451344730, 902689460, 1805378920]

約数ペア:

[(1, 1805378920), (2, 902689460), (4, 451344730), (5, 361075784), (8, 225672365), (10, 180537892), (17, 106198760), (20, 90268946), (34, 53099380), (40, 45134473), (68, 26549690), (85, 21239752), (136, 13274845), (170, 10619876), (197, 9164360), (340, 5309938), (394, 4582180), (680, 2654969), (788, 2291090), (985, 1832872), (1576, 1145545), (1970, 916436), (3349, 539080), (3940, 458218), (6698, 269540), (7880, 229109), (13396, 134770), (13477, 133960), (16745, 107816), (26792, 67385), (26954, 66980), (33490, 53908)]