21223678

素因数分解:

$2^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{6343}}^1$

素因数の和:6591

約数の個数: 16

約数和(自身を含む): 36541440

約数和(自身を除く): 15317762

約数列:

[1, 2, 7, 14, 239, 478, 1673, 3346, 6343, 12686, 44401, 88802, 1515977, 3031954, 10611839, 21223678]

約数ペア:

[(1, 21223678), (2, 10611839), (7, 3031954), (14, 1515977), (239, 88802), (478, 44401), (1673, 12686), (3346, 6343)]