21000456818

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{419}}^1\times {\mathrm{919}}^1$

素因数の和:1455

約数の個数: 64

約数和(自身を含む): 35944473600

約数和(自身を除く): 14944016782

約数列:

[1, 2, 11, 22, 37, 67, 74, 134, 407, 419, 737, 814, 838, 919, 1474, 1838, 2479, 4609, 4958, 9218, 10109, 15503, 20218, 27269, 28073, 31006, 34003, 54538, 56146, 61573, 68006, 123146, 170533, 308803, 341066, 374033, 385061, 617606, 677303, 748066, 770122, 1038701, 1354606, 2077402, 2278201, 4235671, 4556402, 8471342, 11425711, 14247257, 22851422, 25060211, 25799087, 28494514, 50120422, 51598174, 156719827, 283789957, 313439654, 567579914, 954566219, 1909132438, 10500228409, 21000456818]

約数ペア:

[(1, 21000456818), (2, 10500228409), (11, 1909132438), (22, 954566219), (37, 567579914), (67, 313439654), (74, 283789957), (134, 156719827), (407, 51598174), (419, 50120422), (737, 28494514), (814, 25799087), (838, 25060211), (919, 22851422), (1474, 14247257), (1838, 11425711), (2479, 8471342), (4609, 4556402), (4958, 4235671), (9218, 2278201), (10109, 2077402), (15503, 1354606), (20218, 1038701), (27269, 770122), (28073, 748066), (31006, 677303), (34003, 617606), (54538, 385061), (56146, 374033), (61573, 341066), (68006, 308803), (123146, 170533)]