21207376

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{73}}^1\times {\mathrm{271}}^1$

素因数の和:419

約数の個数: 40

約数和(自身を含む): 42429824

約数和(自身を除く): 21222448

約数列:

[1, 2, 4, 8, 16, 67, 73, 134, 146, 268, 271, 292, 536, 542, 584, 1072, 1084, 1168, 2168, 4336, 4891, 9782, 18157, 19564, 19783, 36314, 39128, 39566, 72628, 78256, 79132, 145256, 158264, 290512, 316528, 1325461, 2650922, 5301844, 10603688, 21207376]

約数ペア:

[(1, 21207376), (2, 10603688), (4, 5301844), (8, 2650922), (16, 1325461), (67, 316528), (73, 290512), (134, 158264), (146, 145256), (268, 79132), (271, 78256), (292, 72628), (536, 39566), (542, 39128), (584, 36314), (1072, 19783), (1084, 19564), (1168, 18157), (2168, 9782), (4336, 4891)]