278493328

素因数分解:

$2^4\times {\mathrm{79}}^1\times {\mathrm{220327}}^1$

素因数の和:220414

約数の個数: 20

約数和(自身を含む): 546413440

約数和(自身を除く): 267920112

約数列:

[1, 2, 4, 8, 16, 79, 158, 316, 632, 1264, 220327, 440654, 881308, 1762616, 3525232, 17405833, 34811666, 69623332, 139246664, 278493328]

約数ペア:

[(1, 278493328), (2, 139246664), (4, 69623332), (8, 34811666), (16, 17405833), (79, 3525232), (158, 1762616), (316, 881308), (632, 440654), (1264, 220327)]