21321580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{152297}}^1$

素因数の和:152313

約数の個数: 24

約数和(自身を含む): 51172128

約数和(自身を除く): 29850548

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 152297, 304594, 609188, 761485, 1066079, 1522970, 2132158, 3045940, 4264316, 5330395, 10660790, 21321580]

約数ペア:

[(1, 21321580), (2, 10660790), (4, 5330395), (5, 4264316), (7, 3045940), (10, 2132158), (14, 1522970), (20, 1066079), (28, 761485), (35, 609188), (70, 304594), (140, 152297)]