21240804

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{2897}}^1$

素因数の和:2964

約数の個数: 48

約数和(自身を含む): 54528768

約数和(自身を除く): 33287964

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 47, 52, 78, 94, 141, 156, 188, 282, 564, 611, 1222, 1833, 2444, 2897, 3666, 5794, 7332, 8691, 11588, 17382, 34764, 37661, 75322, 112983, 136159, 150644, 225966, 272318, 408477, 451932, 544636, 816954, 1633908, 1770067, 3540134, 5310201, 7080268, 10620402, 21240804]

約数ペア:

[(1, 21240804), (2, 10620402), (3, 7080268), (4, 5310201), (6, 3540134), (12, 1770067), (13, 1633908), (26, 816954), (39, 544636), (47, 451932), (52, 408477), (78, 272318), (94, 225966), (141, 150644), (156, 136159), (188, 112983), (282, 75322), (564, 37661), (611, 34764), (1222, 17382), (1833, 11588), (2444, 8691), (2897, 7332), (3666, 5794)]