20565745906615

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{280741873}}^1$

素因数の和:280741928

約数の個数: 48

約数和(自身を含む): 32260610225088

約数和(自身を除く): 11694864318473

約数列:

[1, 5, 7, 13, 23, 35, 49, 65, 91, 115, 161, 245, 299, 455, 637, 805, 1127, 1495, 2093, 3185, 5635, 10465, 14651, 73255, 280741873, 1403709365, 1965193111, 3649644349, 6457063079, 9825965555, 13756351777, 18248221745, 25547510443, 32285315395, 45199441553, 68781758885, 83941820027, 127737552215, 178832573101, 225997207765, 316396090871, 419709100135, 587592740189, 894162865505, 1581980454355, 2937963700945, 4113149181323, 20565745906615]

約数ペア:

[(1, 20565745906615), (5, 4113149181323), (7, 2937963700945), (13, 1581980454355), (23, 894162865505), (35, 587592740189), (49, 419709100135), (65, 316396090871), (91, 225997207765), (115, 178832573101), (161, 127737552215), (245, 83941820027), (299, 68781758885), (455, 45199441553), (637, 32285315395), (805, 25547510443), (1127, 18248221745), (1495, 13756351777), (2093, 9825965555), (3185, 6457063079), (5635, 3649644349), (10465, 1965193111), (14651, 1403709365), (73255, 280741873)]