21640352

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{15727}}^1$

素因数の和:15780

約数の個数: 24

約数和(自身を含む): 43598016

約数和(自身を除く): 21957664

約数列:

[1, 2, 4, 8, 16, 32, 43, 86, 172, 344, 688, 1376, 15727, 31454, 62908, 125816, 251632, 503264, 676261, 1352522, 2705044, 5410088, 10820176, 21640352]

約数ペア:

[(1, 21640352), (2, 10820176), (4, 5410088), (8, 2705044), (16, 1352522), (32, 676261), (43, 503264), (86, 251632), (172, 125816), (344, 62908), (688, 31454), (1376, 15727)]