17788940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{277}}^1$

素因数の和:331

約数の個数: 72

約数和(自身を含む): 42734160

約数和(自身を除く): 24945220

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 169, 190, 247, 260, 277, 338, 380, 494, 554, 676, 845, 988, 1108, 1235, 1385, 1690, 2470, 2770, 3211, 3380, 3601, 4940, 5263, 5540, 6422, 7202, 10526, 12844, 14404, 16055, 18005, 21052, 26315, 32110, 36010, 46813, 52630, 64220, 68419, 72020, 93626, 105260, 136838, 187252, 234065, 273676, 342095, 468130, 684190, 889447, 936260, 1368380, 1778894, 3557788, 4447235, 8894470, 17788940]

約数ペア:

[(1, 17788940), (2, 8894470), (4, 4447235), (5, 3557788), (10, 1778894), (13, 1368380), (19, 936260), (20, 889447), (26, 684190), (38, 468130), (52, 342095), (65, 273676), (76, 234065), (95, 187252), (130, 136838), (169, 105260), (190, 93626), (247, 72020), (260, 68419), (277, 64220), (338, 52630), (380, 46813), (494, 36010), (554, 32110), (676, 26315), (845, 21052), (988, 18005), (1108, 16055), (1235, 14404), (1385, 12844), (1690, 10526), (2470, 7202), (2770, 6422), (3211, 5540), (3380, 5263), (3601, 4940)]