20921296365

素因数分解:

$3^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{3120253}}^1$

素因数の和:3120413

約数の個数: 24

約数和(自身を含む): 36506971800

約数和(自身を除く): 15585675435

約数列:

[1, 3, 5, 9, 15, 45, 149, 447, 745, 1341, 2235, 6705, 3120253, 9360759, 15601265, 28082277, 46803795, 140411385, 464917697, 1394753091, 2324588485, 4184259273, 6973765455, 20921296365]

約数ペア:

[(1, 20921296365), (3, 6973765455), (5, 4184259273), (9, 2324588485), (15, 1394753091), (45, 464917697), (149, 140411385), (447, 46803795), (745, 28082277), (1341, 15601265), (2235, 9360759), (6705, 3120253)]