21000724808

素因数分解:

$2^3\times 7^1\times {\mathrm{197}}^1\times {\mathrm{1903619}}^1$

素因数の和:1903829

約数の個数: 32

約数和(自身を含む): 45230011200

約数和(自身を除く): 24229286392

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 197, 394, 788, 1379, 1576, 2758, 5516, 11032, 1903619, 3807238, 7614476, 13325333, 15228952, 26650666, 53301332, 106602664, 375012943, 750025886, 1500051772, 2625090601, 3000103544, 5250181202, 10500362404, 21000724808]

約数ペア:

[(1, 21000724808), (2, 10500362404), (4, 5250181202), (7, 3000103544), (8, 2625090601), (14, 1500051772), (28, 750025886), (56, 375012943), (197, 106602664), (394, 53301332), (788, 26650666), (1379, 15228952), (1576, 13325333), (2758, 7614476), (5516, 3807238), (11032, 1903619)]