21899408

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{433}}^1$

素因数の和:579

約数の個数: 40

約数和(自身を含む): 44398200

約数和(自身を除く): 22498792

約数列:

[1, 2, 4, 8, 16, 29, 58, 109, 116, 218, 232, 433, 436, 464, 866, 872, 1732, 1744, 3161, 3464, 6322, 6928, 12557, 12644, 25114, 25288, 47197, 50228, 50576, 94394, 100456, 188788, 200912, 377576, 755152, 1368713, 2737426, 5474852, 10949704, 21899408]

約数ペア:

[(1, 21899408), (2, 10949704), (4, 5474852), (8, 2737426), (16, 1368713), (29, 755152), (58, 377576), (109, 200912), (116, 188788), (218, 100456), (232, 94394), (433, 50576), (436, 50228), (464, 47197), (866, 25288), (872, 25114), (1732, 12644), (1744, 12557), (3161, 6928), (3464, 6322)]