19796517

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{269}}^1$

素因数の和:342

約数の個数: 48

約数和(自身を含む): 33611760

約数和(自身を除く): 13815243

約数列:

[1, 3, 9, 13, 17, 37, 39, 51, 111, 117, 153, 221, 269, 333, 481, 629, 663, 807, 1443, 1887, 1989, 2421, 3497, 4329, 4573, 5661, 8177, 9953, 10491, 13719, 24531, 29859, 31473, 41157, 59449, 73593, 89577, 129389, 169201, 178347, 388167, 507603, 535041, 1164501, 1522809, 2199613, 6598839, 19796517]

約数ペア:

[(1, 19796517), (3, 6598839), (9, 2199613), (13, 1522809), (17, 1164501), (37, 535041), (39, 507603), (51, 388167), (111, 178347), (117, 169201), (153, 129389), (221, 89577), (269, 73593), (333, 59449), (481, 41157), (629, 31473), (663, 29859), (807, 24531), (1443, 13719), (1887, 10491), (1989, 9953), (2421, 8177), (3497, 5661), (4329, 4573)]