21655218

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{313}}^1\times {\mathrm{887}}^1$

素因数の和:1218

約数の個数: 32

約数和(自身を含む): 46843776

約数和(自身を除く): 25188558

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 313, 626, 887, 939, 1774, 1878, 2661, 4069, 5322, 8138, 11531, 12207, 23062, 24414, 34593, 69186, 277631, 555262, 832893, 1665786, 3609203, 7218406, 10827609, 21655218]

約数ペア:

[(1, 21655218), (2, 10827609), (3, 7218406), (6, 3609203), (13, 1665786), (26, 832893), (39, 555262), (78, 277631), (313, 69186), (626, 34593), (887, 24414), (939, 23062), (1774, 12207), (1878, 11531), (2661, 8138), (4069, 5322)]