20681528

素因数分解:

$2^3\times 7^3\times {\mathrm{7537}}^1$

素因数の和:7564

約数の個数: 32

約数和(自身を含む): 45228000

約数和(自身を除く): 24546472

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 343, 392, 686, 1372, 2744, 7537, 15074, 30148, 52759, 60296, 105518, 211036, 369313, 422072, 738626, 1477252, 2585191, 2954504, 5170382, 10340764, 20681528]

約数ペア:

[(1, 20681528), (2, 10340764), (4, 5170382), (7, 2954504), (8, 2585191), (14, 1477252), (28, 738626), (49, 422072), (56, 369313), (98, 211036), (196, 105518), (343, 60296), (392, 52759), (686, 30148), (1372, 15074), (2744, 7537)]