638396512

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{90271}}^1$

素因数の和:90311

約数の個数: 48

約数和(自身を含む): 1433158272

約数和(自身を除く): 794761760

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 32, 34, 52, 68, 104, 136, 208, 221, 272, 416, 442, 544, 884, 1768, 3536, 7072, 90271, 180542, 361084, 722168, 1173523, 1444336, 1534607, 2347046, 2888672, 3069214, 4694092, 6138428, 9388184, 12276856, 18776368, 19949891, 24553712, 37552736, 39899782, 49107424, 79799564, 159599128, 319198256, 638396512]

約数ペア:

[(1, 638396512), (2, 319198256), (4, 159599128), (8, 79799564), (13, 49107424), (16, 39899782), (17, 37552736), (26, 24553712), (32, 19949891), (34, 18776368), (52, 12276856), (68, 9388184), (104, 6138428), (136, 4694092), (208, 3069214), (221, 2888672), (272, 2347046), (416, 1534607), (442, 1444336), (544, 1173523), (884, 722168), (1768, 361084), (3536, 180542), (7072, 90271)]