20168653900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{1489}}^1\times {\mathrm{7129}}^1$

素因数の和:8651

約数の個数: 72

約数和(自身を含む): 46106858000

約数和(自身を除く): 25938204100

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 380, 475, 950, 1489, 1900, 2978, 5956, 7129, 7445, 14258, 14890, 28291, 28516, 29780, 35645, 37225, 56582, 71290, 74450, 113164, 135451, 141455, 142580, 148900, 178225, 270902, 282910, 356450, 541804, 565820, 677255, 707275, 712900, 1354510, 1414550, 2709020, 2829100, 3386275, 6772550, 10615081, 13545100, 21230162, 42460324, 53075405, 106150810, 201686539, 212301620, 265377025, 403373078, 530754050, 806746156, 1008432695, 1061508100, 2016865390, 4033730780, 5042163475, 10084326950, 20168653900]

約数ペア:

[(1, 20168653900), (2, 10084326950), (4, 5042163475), (5, 4033730780), (10, 2016865390), (19, 1061508100), (20, 1008432695), (25, 806746156), (38, 530754050), (50, 403373078), (76, 265377025), (95, 212301620), (100, 201686539), (190, 106150810), (380, 53075405), (475, 42460324), (950, 21230162), (1489, 13545100), (1900, 10615081), (2978, 6772550), (5956, 3386275), (7129, 2829100), (7445, 2709020), (14258, 1414550), (14890, 1354510), (28291, 712900), (28516, 707275), (29780, 677255), (35645, 565820), (37225, 541804), (56582, 356450), (71290, 282910), (74450, 270902), (113164, 178225), (135451, 148900), (141455, 142580)]