19868480

素因数分解:

$2^6\times 5^1\times {\mathrm{29}}^1\times {\mathrm{2141}}^1$

素因数の和:2187

約数の個数: 56

約数和(自身を含む): 48966120

約数和(自身を除く): 29097640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 64, 80, 116, 145, 160, 232, 290, 320, 464, 580, 928, 1160, 1856, 2141, 2320, 4282, 4640, 8564, 9280, 10705, 17128, 21410, 34256, 42820, 62089, 68512, 85640, 124178, 137024, 171280, 248356, 310445, 342560, 496712, 620890, 685120, 993424, 1241780, 1986848, 2483560, 3973696, 4967120, 9934240, 19868480]

約数ペア:

[(1, 19868480), (2, 9934240), (4, 4967120), (5, 3973696), (8, 2483560), (10, 1986848), (16, 1241780), (20, 993424), (29, 685120), (32, 620890), (40, 496712), (58, 342560), (64, 310445), (80, 248356), (116, 171280), (145, 137024), (160, 124178), (232, 85640), (290, 68512), (320, 62089), (464, 42820), (580, 34256), (928, 21410), (1160, 17128), (1856, 10705), (2141, 9280), (2320, 8564), (4282, 4640)]