20866664

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{28663}}^1$

素因数の和:28689

約数の個数: 32

約数和(自身を含む): 48155520

約数和(自身を除く): 27288856

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728, 28663, 57326, 114652, 200641, 229304, 372619, 401282, 745238, 802564, 1490476, 1605128, 2608333, 2980952, 5216666, 10433332, 20866664]

約数ペア:

[(1, 20866664), (2, 10433332), (4, 5216666), (7, 2980952), (8, 2608333), (13, 1605128), (14, 1490476), (26, 802564), (28, 745238), (52, 401282), (56, 372619), (91, 229304), (104, 200641), (182, 114652), (364, 57326), (728, 28663)]