21389704

素因数分解:

$2^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{13171}}^1$

素因数の和:13213

約数の個数: 32

約数和(自身を含む): 47419200

約数和(自身を除く): 26029496

約数列:

[1, 2, 4, 7, 8, 14, 28, 29, 56, 58, 116, 203, 232, 406, 812, 1624, 13171, 26342, 52684, 92197, 105368, 184394, 368788, 381959, 737576, 763918, 1527836, 2673713, 3055672, 5347426, 10694852, 21389704]

約数ペア:

[(1, 21389704), (2, 10694852), (4, 5347426), (7, 3055672), (8, 2673713), (14, 1527836), (28, 763918), (29, 737576), (56, 381959), (58, 368788), (116, 184394), (203, 105368), (232, 92197), (406, 52684), (812, 26342), (1624, 13171)]