21431360

素因数分解:

$2^6\times 5^1\times {\mathrm{66973}}^1$

素因数の和:66990

約数の個数: 28

約数和(自身を含む): 51034188

約数和(自身を除く): 29602828

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 66973, 133946, 267892, 334865, 535784, 669730, 1071568, 1339460, 2143136, 2678920, 4286272, 5357840, 10715680, 21431360]

約数ペア:

[(1, 21431360), (2, 10715680), (4, 5357840), (5, 4286272), (8, 2678920), (10, 2143136), (16, 1339460), (20, 1071568), (32, 669730), (40, 535784), (64, 334865), (80, 267892), (160, 133946), (320, 66973)]