21638734

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{383}}^1$

素因数の和:492

約数の個数: 32

約数和(自身を含む): 36578304

約数和(自身を除く): 14939570

約数列:

[1, 2, 13, 26, 41, 53, 82, 106, 383, 533, 689, 766, 1066, 1378, 2173, 4346, 4979, 9958, 15703, 20299, 28249, 31406, 40598, 56498, 204139, 263887, 408278, 527774, 832259, 1664518, 10819367, 21638734]

約数ペア:

[(1, 21638734), (2, 10819367), (13, 1664518), (26, 832259), (41, 527774), (53, 408278), (82, 263887), (106, 204139), (383, 56498), (533, 40598), (689, 31406), (766, 28249), (1066, 20299), (1378, 15703), (2173, 9958), (4346, 4979)]