123720320

素因数分解:

$2^7\times 5^1\times {\mathrm{79}}^1\times {\mathrm{2447}}^1$

素因数の和:2545

約数の個数: 64

約数和(自身を含む): 299635200

約数和(自身を除く): 175914880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 316, 320, 395, 632, 640, 790, 1264, 1580, 2447, 2528, 3160, 4894, 5056, 6320, 9788, 10112, 12235, 12640, 19576, 24470, 25280, 39152, 48940, 50560, 78304, 97880, 156608, 193313, 195760, 313216, 386626, 391520, 773252, 783040, 966565, 1546504, 1566080, 1933130, 3093008, 3866260, 6186016, 7732520, 12372032, 15465040, 24744064, 30930080, 61860160, 123720320]

約数ペア:

[(1, 123720320), (2, 61860160), (4, 30930080), (5, 24744064), (8, 15465040), (10, 12372032), (16, 7732520), (20, 6186016), (32, 3866260), (40, 3093008), (64, 1933130), (79, 1566080), (80, 1546504), (128, 966565), (158, 783040), (160, 773252), (316, 391520), (320, 386626), (395, 313216), (632, 195760), (640, 193313), (790, 156608), (1264, 97880), (1580, 78304), (2447, 50560), (2528, 48940), (3160, 39152), (4894, 25280), (5056, 24470), (6320, 19576), (9788, 12640), (10112, 12235)]