257739560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{1373}}^1$

素因数の和:1435

約数の個数: 96

約数和(自身を含む): 659602440

約数和(自身を除く): 401862880

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 361, 380, 494, 520, 722, 760, 988, 1235, 1373, 1444, 1805, 1976, 2470, 2746, 2888, 3610, 4693, 4940, 5492, 6865, 7220, 9386, 9880, 10984, 13730, 14440, 17849, 18772, 23465, 26087, 27460, 35698, 37544, 46930, 52174, 54920, 71396, 89245, 93860, 104348, 130435, 142792, 178490, 187720, 208696, 260870, 339131, 356980, 495653, 521740, 678262, 713960, 991306, 1043480, 1356524, 1695655, 1982612, 2478265, 2713048, 3391310, 3965224, 4956530, 6443489, 6782620, 9913060, 12886978, 13565240, 19826120, 25773956, 32217445, 51547912, 64434890, 128869780, 257739560]

約数ペア:

[(1, 257739560), (2, 128869780), (4, 64434890), (5, 51547912), (8, 32217445), (10, 25773956), (13, 19826120), (19, 13565240), (20, 12886978), (26, 9913060), (38, 6782620), (40, 6443489), (52, 4956530), (65, 3965224), (76, 3391310), (95, 2713048), (104, 2478265), (130, 1982612), (152, 1695655), (190, 1356524), (247, 1043480), (260, 991306), (361, 713960), (380, 678262), (494, 521740), (520, 495653), (722, 356980), (760, 339131), (988, 260870), (1235, 208696), (1373, 187720), (1444, 178490), (1805, 142792), (1976, 130435), (2470, 104348), (2746, 93860), (2888, 89245), (3610, 71396), (4693, 54920), (4940, 52174), (5492, 46930), (6865, 37544), (7220, 35698), (9386, 27460), (9880, 26087), (10984, 23465), (13730, 18772), (14440, 17849)]