21313773

素因数分解:

$3^6\times {\mathrm{13}}^2\times {\mathrm{173}}^1$

素因数の和:217

約数の個数: 42

約数和(自身を含む): 34803306

約数和(自身を除く): 13489533

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 169, 173, 243, 351, 507, 519, 729, 1053, 1521, 1557, 2249, 3159, 4563, 4671, 6747, 9477, 13689, 14013, 20241, 29237, 41067, 42039, 60723, 87711, 123201, 126117, 182169, 263133, 546507, 789399, 1639521, 2368197, 7104591, 21313773]

約数ペア:

[(1, 21313773), (3, 7104591), (9, 2368197), (13, 1639521), (27, 789399), (39, 546507), (81, 263133), (117, 182169), (169, 126117), (173, 123201), (243, 87711), (351, 60723), (507, 42039), (519, 41067), (729, 29237), (1053, 20241), (1521, 14013), (1557, 13689), (2249, 9477), (3159, 6747), (4563, 4671)]