21454504

素因数分解:

$2^3\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{409}}^1$

素因数の和:577

約数の個数: 32

約数和(自身を含む): 41328000

約数和(自身を除く): 19873496

約数列:

[1, 2, 4, 8, 79, 83, 158, 166, 316, 332, 409, 632, 664, 818, 1636, 3272, 6557, 13114, 26228, 32311, 33947, 52456, 64622, 67894, 129244, 135788, 258488, 271576, 2681813, 5363626, 10727252, 21454504]

約数ペア:

[(1, 21454504), (2, 10727252), (4, 5363626), (8, 2681813), (79, 271576), (83, 258488), (158, 135788), (166, 129244), (316, 67894), (332, 64622), (409, 52456), (632, 33947), (664, 32311), (818, 26228), (1636, 13114), (3272, 6557)]