21957635

素因数分解:

$5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:180

約数の個数: 48

約数和(自身を含む): 33242400

約数和(自身を除く): 11284765

約数列:

[1, 5, 7, 19, 35, 49, 53, 89, 95, 133, 245, 265, 371, 445, 623, 665, 931, 1007, 1691, 1855, 2597, 3115, 4361, 4655, 4717, 5035, 7049, 8455, 11837, 12985, 21805, 23585, 33019, 35245, 49343, 59185, 82859, 89623, 165095, 231133, 246715, 414295, 448115, 627361, 1155665, 3136805, 4391527, 21957635]

約数ペア:

[(1, 21957635), (5, 4391527), (7, 3136805), (19, 1155665), (35, 627361), (49, 448115), (53, 414295), (89, 246715), (95, 231133), (133, 165095), (245, 89623), (265, 82859), (371, 59185), (445, 49343), (623, 35245), (665, 33019), (931, 23585), (1007, 21805), (1691, 12985), (1855, 11837), (2597, 8455), (3115, 7049), (4361, 5035), (4655, 4717)]