20906536

素因数分解:

$2^3\times 7^3\times {\mathrm{19}}^1\times {\mathrm{401}}^1$

素因数の和:447

約数の個数: 64

約数和(自身を含む): 48240000

約数和(自身を除く): 27333464

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 49, 56, 76, 98, 133, 152, 196, 266, 343, 392, 401, 532, 686, 802, 931, 1064, 1372, 1604, 1862, 2744, 2807, 3208, 3724, 5614, 6517, 7448, 7619, 11228, 13034, 15238, 19649, 22456, 26068, 30476, 39298, 52136, 53333, 60952, 78596, 106666, 137543, 157192, 213332, 275086, 373331, 426664, 550172, 746662, 1100344, 1493324, 2613317, 2986648, 5226634, 10453268, 20906536]

約数ペア:

[(1, 20906536), (2, 10453268), (4, 5226634), (7, 2986648), (8, 2613317), (14, 1493324), (19, 1100344), (28, 746662), (38, 550172), (49, 426664), (56, 373331), (76, 275086), (98, 213332), (133, 157192), (152, 137543), (196, 106666), (266, 78596), (343, 60952), (392, 53333), (401, 52136), (532, 39298), (686, 30476), (802, 26068), (931, 22456), (1064, 19649), (1372, 15238), (1604, 13034), (1862, 11228), (2744, 7619), (2807, 7448), (3208, 6517), (3724, 5614)]