21431930

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{4021}}^1$

素因数の和:4082

約数の個数: 32

約数和(自身を含む): 42568848

約数和(自身を除く): 21136918

約数列:

[1, 2, 5, 10, 13, 26, 41, 65, 82, 130, 205, 410, 533, 1066, 2665, 4021, 5330, 8042, 20105, 40210, 52273, 104546, 164861, 261365, 329722, 522730, 824305, 1648610, 2143193, 4286386, 10715965, 21431930]

約数ペア:

[(1, 21431930), (2, 10715965), (5, 4286386), (10, 2143193), (13, 1648610), (26, 824305), (41, 522730), (65, 329722), (82, 261365), (130, 164861), (205, 104546), (410, 52273), (533, 40210), (1066, 20105), (2665, 8042), (4021, 5330)]