18998525

素因数分解:

$5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1193}}^1$

素因数の和:1230

約数の個数: 36

約数和(自身を含む): 29537172

約数和(自身を除く): 10538647

約数列:

[1, 5, 7, 13, 25, 35, 49, 65, 91, 175, 245, 325, 455, 637, 1193, 1225, 2275, 3185, 5965, 8351, 15509, 15925, 29825, 41755, 58457, 77545, 108563, 208775, 292285, 387725, 542815, 759941, 1461425, 2714075, 3799705, 18998525]

約数ペア:

[(1, 18998525), (5, 3799705), (7, 2714075), (13, 1461425), (25, 759941), (35, 542815), (49, 387725), (65, 292285), (91, 208775), (175, 108563), (245, 77545), (325, 58457), (455, 41755), (637, 29825), (1193, 15925), (1225, 15509), (2275, 8351), (3185, 5965)]