398214140

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{179}}^1\times {\mathrm{2713}}^1$

素因数の和:2942

約数の個数: 48

約数和(自身を含む): 861749280

約数和(自身を除く): 463535140

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 179, 205, 358, 410, 716, 820, 895, 1790, 2713, 3580, 5426, 7339, 10852, 13565, 14678, 27130, 29356, 36695, 54260, 73390, 111233, 146780, 222466, 444932, 485627, 556165, 971254, 1112330, 1942508, 2224660, 2428135, 4856270, 9712540, 19910707, 39821414, 79642828, 99553535, 199107070, 398214140]

約数ペア:

[(1, 398214140), (2, 199107070), (4, 99553535), (5, 79642828), (10, 39821414), (20, 19910707), (41, 9712540), (82, 4856270), (164, 2428135), (179, 2224660), (205, 1942508), (358, 1112330), (410, 971254), (716, 556165), (820, 485627), (895, 444932), (1790, 222466), (2713, 146780), (3580, 111233), (5426, 73390), (7339, 54260), (10852, 36695), (13565, 29356), (14678, 27130)]