21257730

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{18169}}^1$

素因数の和:18195

約数の個数: 48

約数和(自身を含む): 59524920

約数和(自身を除く): 38267190

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 30, 39, 45, 65, 78, 90, 117, 130, 195, 234, 390, 585, 1170, 18169, 36338, 54507, 90845, 109014, 163521, 181690, 236197, 272535, 327042, 472394, 545070, 708591, 817605, 1180985, 1417182, 1635210, 2125773, 2361970, 3542955, 4251546, 7085910, 10628865, 21257730]

約数ペア:

[(1, 21257730), (2, 10628865), (3, 7085910), (5, 4251546), (6, 3542955), (9, 2361970), (10, 2125773), (13, 1635210), (15, 1417182), (18, 1180985), (26, 817605), (30, 708591), (39, 545070), (45, 472394), (65, 327042), (78, 272535), (90, 236197), (117, 181690), (130, 163521), (195, 109014), (234, 90845), (390, 54507), (585, 36338), (1170, 18169)]