40804840

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{179}}^1$

素因数の和:370

約数の個数: 64

約数和(自身を含む): 95256000

約数和(自身を除く): 54451160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 139, 164, 179, 205, 278, 328, 358, 410, 556, 695, 716, 820, 895, 1112, 1390, 1432, 1640, 1790, 2780, 3580, 5560, 5699, 7160, 7339, 11398, 14678, 22796, 24881, 28495, 29356, 36695, 45592, 49762, 56990, 58712, 73390, 99524, 113980, 124405, 146780, 199048, 227960, 248810, 293560, 497620, 995240, 1020121, 2040242, 4080484, 5100605, 8160968, 10201210, 20402420, 40804840]

約数ペア:

[(1, 40804840), (2, 20402420), (4, 10201210), (5, 8160968), (8, 5100605), (10, 4080484), (20, 2040242), (40, 1020121), (41, 995240), (82, 497620), (139, 293560), (164, 248810), (179, 227960), (205, 199048), (278, 146780), (328, 124405), (358, 113980), (410, 99524), (556, 73390), (695, 58712), (716, 56990), (820, 49762), (895, 45592), (1112, 36695), (1390, 29356), (1432, 28495), (1640, 24881), (1790, 22796), (2780, 14678), (3580, 11398), (5560, 7339), (5699, 7160)]