21797204

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{719}}^1$

素因数の和:800

約数の個数: 48

約数和(自身を含む): 45722880

約数和(自身を除く): 23925676

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 53, 106, 143, 212, 286, 572, 583, 689, 719, 1166, 1378, 1438, 2332, 2756, 2876, 7579, 7909, 9347, 15158, 15818, 18694, 30316, 31636, 37388, 38107, 76214, 102817, 152428, 205634, 411268, 419177, 495391, 838354, 990782, 1676708, 1981564, 5449301, 10898602, 21797204]

約数ペア:

[(1, 21797204), (2, 10898602), (4, 5449301), (11, 1981564), (13, 1676708), (22, 990782), (26, 838354), (44, 495391), (52, 419177), (53, 411268), (106, 205634), (143, 152428), (212, 102817), (286, 76214), (572, 38107), (583, 37388), (689, 31636), (719, 30316), (1166, 18694), (1378, 15818), (1438, 15158), (2332, 9347), (2756, 7909), (2876, 7579)]