221207900

素因数分解:

$2^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{28001}}^1$

素因数の和:28094

約数の個数: 36

約数和(自身を含む): 486114720

約数和(自身を除く): 264906820

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 158, 316, 395, 790, 1580, 1975, 3950, 7900, 28001, 56002, 112004, 140005, 280010, 560020, 700025, 1400050, 2212079, 2800100, 4424158, 8848316, 11060395, 22120790, 44241580, 55301975, 110603950, 221207900]

約数ペア:

[(1, 221207900), (2, 110603950), (4, 55301975), (5, 44241580), (10, 22120790), (20, 11060395), (25, 8848316), (50, 4424158), (79, 2800100), (100, 2212079), (158, 1400050), (316, 700025), (395, 560020), (790, 280010), (1580, 140005), (1975, 112004), (3950, 56002), (7900, 28001)]