639968368

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{853}}^1\times {\mathrm{3607}}^1$

素因数の和:4481

約数の個数: 40

約数和(自身を含む): 1337254688

約数和(自身を除く): 697286320

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 853, 1706, 3412, 3607, 6824, 7214, 11089, 13648, 14428, 22178, 28856, 44356, 46891, 57712, 88712, 93782, 177424, 187564, 375128, 750256, 3076771, 6153542, 12307084, 24614168, 39998023, 49228336, 79996046, 159992092, 319984184, 639968368]

約数ペア:

[(1, 639968368), (2, 319984184), (4, 159992092), (8, 79996046), (13, 49228336), (16, 39998023), (26, 24614168), (52, 12307084), (104, 6153542), (208, 3076771), (853, 750256), (1706, 375128), (3412, 187564), (3607, 177424), (6824, 93782), (7214, 88712), (11089, 57712), (13648, 46891), (14428, 44356), (22178, 28856)]