90896840

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^2\times {\mathrm{1229}}^1$

素因数の和:1326

約数の個数: 48

約数和(自身を含む): 209555100

約数和(自身を除く): 118658260

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1229, 1720, 1849, 2458, 3698, 4916, 6145, 7396, 9245, 9832, 12290, 14792, 18490, 24580, 36980, 49160, 52847, 73960, 105694, 211388, 264235, 422776, 528470, 1056940, 2113880, 2272421, 4544842, 9089684, 11362105, 18179368, 22724210, 45448420, 90896840]

約数ペア:

[(1, 90896840), (2, 45448420), (4, 22724210), (5, 18179368), (8, 11362105), (10, 9089684), (20, 4544842), (40, 2272421), (43, 2113880), (86, 1056940), (172, 528470), (215, 422776), (344, 264235), (430, 211388), (860, 105694), (1229, 73960), (1720, 52847), (1849, 49160), (2458, 36980), (3698, 24580), (4916, 18490), (6145, 14792), (7396, 12290), (9245, 9832)]