215823980

素因数分解:

$2^2\times 5^1\times {\mathrm{1571}}^1\times {\mathrm{6869}}^1$

素因数の和:8449

約数の個数: 24

約数和(自身を含む): 453584880

約数和(自身を除く): 237760900

約数列:

[1, 2, 4, 5, 10, 20, 1571, 3142, 6284, 6869, 7855, 13738, 15710, 27476, 31420, 34345, 68690, 137380, 10791199, 21582398, 43164796, 53955995, 107911990, 215823980]

約数ペア:

[(1, 215823980), (2, 107911990), (4, 53955995), (5, 43164796), (10, 21582398), (20, 10791199), (1571, 137380), (3142, 68690), (6284, 34345), (6869, 31420), (7855, 27476), (13738, 15710)]