21199444

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{181}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 44029440

約数和(自身を除く): 22829996

約数列:

[1, 2, 4, 7, 14, 28, 47, 89, 94, 178, 181, 188, 329, 356, 362, 623, 658, 724, 1246, 1267, 1316, 2492, 2534, 4183, 5068, 8366, 8507, 16109, 16732, 17014, 29281, 32218, 34028, 58562, 59549, 64436, 112763, 117124, 119098, 225526, 238196, 451052, 757123, 1514246, 3028492, 5299861, 10599722, 21199444]

約数ペア:

[(1, 21199444), (2, 10599722), (4, 5299861), (7, 3028492), (14, 1514246), (28, 757123), (47, 451052), (89, 238196), (94, 225526), (178, 119098), (181, 117124), (188, 112763), (329, 64436), (356, 59549), (362, 58562), (623, 34028), (658, 32218), (724, 29281), (1246, 17014), (1267, 16732), (1316, 16109), (2492, 8507), (2534, 8366), (4183, 5068)]