18425225

素因数分解:

$5^2\times 7^2\times {\mathrm{13}}^2\times {\mathrm{89}}^1$

素因数の和:139

約数の個数: 54

約数和(自身を含む): 29102490

約数和(自身を除く): 10677265

約数列:

[1, 5, 7, 13, 25, 35, 49, 65, 89, 91, 169, 175, 245, 325, 445, 455, 623, 637, 845, 1157, 1183, 1225, 2225, 2275, 3115, 3185, 4225, 4361, 5785, 5915, 8099, 8281, 15041, 15575, 15925, 21805, 28925, 29575, 40495, 41405, 56693, 75205, 105287, 109025, 202475, 207025, 283465, 376025, 526435, 737009, 1417325, 2632175, 3685045, 18425225]

約数ペア:

[(1, 18425225), (5, 3685045), (7, 2632175), (13, 1417325), (25, 737009), (35, 526435), (49, 376025), (65, 283465), (89, 207025), (91, 202475), (169, 109025), (175, 105287), (245, 75205), (325, 56693), (445, 41405), (455, 40495), (623, 29575), (637, 28925), (845, 21805), (1157, 15925), (1183, 15575), (1225, 15041), (2225, 8281), (2275, 8099), (3115, 5915), (3185, 5785), (4225, 4361)]