21788872

素因数分解:

$2^3\times 7^1\times {\mathrm{607}}^1\times {\mathrm{641}}^1$

素因数の和:1261

約数の個数: 32

約数和(自身を含む): 46840320

約数和(自身を除く): 25051448

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 607, 641, 1214, 1282, 2428, 2564, 4249, 4487, 4856, 5128, 8498, 8974, 16996, 17948, 33992, 35896, 389087, 778174, 1556348, 2723609, 3112696, 5447218, 10894436, 21788872]

約数ペア:

[(1, 21788872), (2, 10894436), (4, 5447218), (7, 3112696), (8, 2723609), (14, 1556348), (28, 778174), (56, 389087), (607, 35896), (641, 33992), (1214, 17948), (1282, 16996), (2428, 8974), (2564, 8498), (4249, 5128), (4487, 4856)]