21000453565

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{38113}}^1$

素因数の和:38318

約数の個数: 48

約数和(自身を含む): 31753230768

約数和(自身を除く): 10752777203

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 173, 245, 455, 637, 865, 1211, 2249, 3185, 6055, 8477, 11245, 15743, 38113, 42385, 78715, 110201, 190565, 266791, 495469, 551005, 1333955, 1867537, 2477345, 3468283, 6593549, 9337685, 17341415, 24277981, 32967745, 46154843, 85716137, 121389905, 230774215, 323083901, 428580685, 600012959, 1615419505, 3000064795, 4200090713, 21000453565]

約数ペア:

[(1, 21000453565), (5, 4200090713), (7, 3000064795), (13, 1615419505), (35, 600012959), (49, 428580685), (65, 323083901), (91, 230774215), (173, 121389905), (245, 85716137), (455, 46154843), (637, 32967745), (865, 24277981), (1211, 17341415), (2249, 9337685), (3185, 6593549), (6055, 3468283), (8477, 2477345), (11245, 1867537), (15743, 1333955), (38113, 551005), (42385, 495469), (78715, 266791), (110201, 190565)]