21154448

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{9941}}^1$

素因数の和:9975

約数の個数: 40

約数和(自身を含む): 49312320

約数和(自身を除く): 28157872

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 56, 76, 112, 133, 152, 266, 304, 532, 1064, 2128, 9941, 19882, 39764, 69587, 79528, 139174, 159056, 188879, 278348, 377758, 556696, 755516, 1113392, 1322153, 1511032, 2644306, 3022064, 5288612, 10577224, 21154448]

約数ペア:

[(1, 21154448), (2, 10577224), (4, 5288612), (7, 3022064), (8, 2644306), (14, 1511032), (16, 1322153), (19, 1113392), (28, 755516), (38, 556696), (56, 377758), (76, 278348), (112, 188879), (133, 159056), (152, 139174), (266, 79528), (304, 69587), (532, 39764), (1064, 19882), (2128, 9941)]