18643960

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^2\times {\mathrm{211}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 43063560

約数和(自身を除く): 24419600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 211, 235, 376, 422, 470, 844, 940, 1055, 1688, 1880, 2110, 2209, 4220, 4418, 8440, 8836, 9917, 11045, 17672, 19834, 22090, 39668, 44180, 49585, 79336, 88360, 99170, 198340, 396680, 466099, 932198, 1864396, 2330495, 3728792, 4660990, 9321980, 18643960]

約数ペア:

[(1, 18643960), (2, 9321980), (4, 4660990), (5, 3728792), (8, 2330495), (10, 1864396), (20, 932198), (40, 466099), (47, 396680), (94, 198340), (188, 99170), (211, 88360), (235, 79336), (376, 49585), (422, 44180), (470, 39668), (844, 22090), (940, 19834), (1055, 17672), (1688, 11045), (1880, 9917), (2110, 8836), (2209, 8440), (4220, 4418)]