18790785

素因数分解:

$3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1$

素因数の和:156

約数の個数: 80

約数和(自身を含む): 37566144

約数和(自身を除く): 18775359

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 43, 45, 65, 81, 83, 117, 129, 135, 195, 215, 249, 351, 387, 405, 415, 559, 585, 645, 747, 1053, 1079, 1161, 1245, 1677, 1755, 1935, 2241, 2795, 3237, 3483, 3569, 3735, 5031, 5265, 5395, 5805, 6723, 8385, 9711, 10707, 11205, 15093, 16185, 17415, 17845, 25155, 29133, 32121, 33615, 45279, 46397, 48555, 53535, 75465, 87399, 96363, 139191, 145665, 160605, 226395, 231985, 289089, 417573, 436995, 481815, 695955, 1252719, 1445445, 2087865, 3758157, 6263595, 18790785]

約数ペア:

[(1, 18790785), (3, 6263595), (5, 3758157), (9, 2087865), (13, 1445445), (15, 1252719), (27, 695955), (39, 481815), (43, 436995), (45, 417573), (65, 289089), (81, 231985), (83, 226395), (117, 160605), (129, 145665), (135, 139191), (195, 96363), (215, 87399), (249, 75465), (351, 53535), (387, 48555), (405, 46397), (415, 45279), (559, 33615), (585, 32121), (645, 29133), (747, 25155), (1053, 17845), (1079, 17415), (1161, 16185), (1245, 15093), (1677, 11205), (1755, 10707), (1935, 9711), (2241, 8385), (2795, 6723), (3237, 5805), (3483, 5395), (3569, 5265), (3735, 5031)]