21457394

素因数分解:

$2^1\times 7^3\times {\mathrm{31}}^1\times {\mathrm{1009}}^1$

素因数の和:1063

約数の個数: 32

約数和(自身を含む): 38784000

約数和(自身を除く): 17326606

約数列:

[1, 2, 7, 14, 31, 49, 62, 98, 217, 343, 434, 686, 1009, 1519, 2018, 3038, 7063, 10633, 14126, 21266, 31279, 49441, 62558, 98882, 218953, 346087, 437906, 692174, 1532671, 3065342, 10728697, 21457394]

約数ペア:

[(1, 21457394), (2, 10728697), (7, 3065342), (14, 1532671), (31, 692174), (49, 437906), (62, 346087), (98, 218953), (217, 98882), (343, 62558), (434, 49441), (686, 31279), (1009, 21266), (1519, 14126), (2018, 10633), (3038, 7063)]