245391380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{79}}^1\times {\mathrm{919}}^1$

素因数の和:1033

約数の個数: 72

約数和(自身を含む): 565689600

約数和(自身を除く): 320298220

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 79, 130, 158, 169, 260, 316, 338, 395, 676, 790, 845, 919, 1027, 1580, 1690, 1838, 2054, 3380, 3676, 4108, 4595, 5135, 9190, 10270, 11947, 13351, 18380, 20540, 23894, 26702, 47788, 53404, 59735, 66755, 72601, 119470, 133510, 145202, 155311, 238940, 267020, 290404, 310622, 363005, 621244, 726010, 776555, 943813, 1452020, 1553110, 1887626, 3106220, 3775252, 4719065, 9438130, 12269569, 18876260, 24539138, 49078276, 61347845, 122695690, 245391380]

約数ペア:

[(1, 245391380), (2, 122695690), (4, 61347845), (5, 49078276), (10, 24539138), (13, 18876260), (20, 12269569), (26, 9438130), (52, 4719065), (65, 3775252), (79, 3106220), (130, 1887626), (158, 1553110), (169, 1452020), (260, 943813), (316, 776555), (338, 726010), (395, 621244), (676, 363005), (790, 310622), (845, 290404), (919, 267020), (1027, 238940), (1580, 155311), (1690, 145202), (1838, 133510), (2054, 119470), (3380, 72601), (3676, 66755), (4108, 59735), (4595, 53404), (5135, 47788), (9190, 26702), (10270, 23894), (11947, 20540), (13351, 18380)]