21399704

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{1231}}^1$

素因数の和:1331

約数の個数: 32

約数和(自身を含む): 41912640

約数和(自身を除く): 20512936

約数列:

[1, 2, 4, 8, 41, 53, 82, 106, 164, 212, 328, 424, 1231, 2173, 2462, 4346, 4924, 8692, 9848, 17384, 50471, 65243, 100942, 130486, 201884, 260972, 403768, 521944, 2674963, 5349926, 10699852, 21399704]

約数ペア:

[(1, 21399704), (2, 10699852), (4, 5349926), (8, 2674963), (41, 521944), (53, 403768), (82, 260972), (106, 201884), (164, 130486), (212, 100942), (328, 65243), (424, 50471), (1231, 17384), (2173, 9848), (2462, 8692), (4346, 4924)]