218255920

素因数分解:

$2^4\times 5^1\times {\mathrm{2728199}}^1$

素因数の和:2728212

約数の個数: 20

約数和(自身を含む): 507445200

約数和(自身を除く): 289189280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2728199, 5456398, 10912796, 13640995, 21825592, 27281990, 43651184, 54563980, 109127960, 218255920]

約数ペア:

[(1, 218255920), (2, 109127960), (4, 54563980), (5, 43651184), (8, 27281990), (10, 21825592), (16, 13640995), (20, 10912796), (40, 5456398), (80, 2728199)]