20651708

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{3529}}^1$

素因数の和:3570

約数の個数: 48

約数和(自身を含む): 47443200

約数和(自身を除く): 26791492

約数列:

[1, 2, 4, 7, 11, 14, 19, 22, 28, 38, 44, 76, 77, 133, 154, 209, 266, 308, 418, 532, 836, 1463, 2926, 3529, 5852, 7058, 14116, 24703, 38819, 49406, 67051, 77638, 98812, 134102, 155276, 268204, 271733, 469357, 543466, 737561, 938714, 1086932, 1475122, 1877428, 2950244, 5162927, 10325854, 20651708]

約数ペア:

[(1, 20651708), (2, 10325854), (4, 5162927), (7, 2950244), (11, 1877428), (14, 1475122), (19, 1086932), (22, 938714), (28, 737561), (38, 543466), (44, 469357), (76, 271733), (77, 268204), (133, 155276), (154, 134102), (209, 98812), (266, 77638), (308, 67051), (418, 49406), (532, 38819), (836, 24703), (1463, 14116), (2926, 7058), (3529, 5852)]