21780453660

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{51858223}}^1$

素因数の和:51858242

約数の個数: 48

約数和(自身を含む): 69697453056

約数和(自身を除く): 47916999396

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 51858223, 103716446, 155574669, 207432892, 259291115, 311149338, 363007561, 518582230, 622298676, 726015122, 777873345, 1037164460, 1089022683, 1452030244, 1555746690, 1815037805, 2178045366, 3111493380, 3630075610, 4356090732, 5445113415, 7260151220, 10890226830, 21780453660]

約数ペア:

[(1, 21780453660), (2, 10890226830), (3, 7260151220), (4, 5445113415), (5, 4356090732), (6, 3630075610), (7, 3111493380), (10, 2178045366), (12, 1815037805), (14, 1555746690), (15, 1452030244), (20, 1089022683), (21, 1037164460), (28, 777873345), (30, 726015122), (35, 622298676), (42, 518582230), (60, 363007561), (70, 311149338), (84, 259291115), (105, 207432892), (140, 155574669), (210, 103716446), (420, 51858223)]