18986920

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{12829}}^1$

素因数の和:12877

約数の個数: 32

約数和(自身を含む): 43878600

約数和(自身を除く): 24891680

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 12829, 25658, 51316, 64145, 102632, 128290, 256580, 474673, 513160, 949346, 1898692, 2373365, 3797384, 4746730, 9493460, 18986920]

約数ペア:

[(1, 18986920), (2, 9493460), (4, 4746730), (5, 3797384), (8, 2373365), (10, 1898692), (20, 949346), (37, 513160), (40, 474673), (74, 256580), (148, 128290), (185, 102632), (296, 64145), (370, 51316), (740, 25658), (1480, 12829)]