15905920

素因数分解:

$2^7\times 5^1\times {\mathrm{29}}^1\times {\mathrm{857}}^1$

素因数の和:905

約数の個数: 64

約数和(自身を含む): 39382200

約数和(自身を除く): 23476280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 64, 80, 116, 128, 145, 160, 232, 290, 320, 464, 580, 640, 857, 928, 1160, 1714, 1856, 2320, 3428, 3712, 4285, 4640, 6856, 8570, 9280, 13712, 17140, 18560, 24853, 27424, 34280, 49706, 54848, 68560, 99412, 109696, 124265, 137120, 198824, 248530, 274240, 397648, 497060, 548480, 795296, 994120, 1590592, 1988240, 3181184, 3976480, 7952960, 15905920]

約数ペア:

[(1, 15905920), (2, 7952960), (4, 3976480), (5, 3181184), (8, 1988240), (10, 1590592), (16, 994120), (20, 795296), (29, 548480), (32, 497060), (40, 397648), (58, 274240), (64, 248530), (80, 198824), (116, 137120), (128, 124265), (145, 109696), (160, 99412), (232, 68560), (290, 54848), (320, 49706), (464, 34280), (580, 27424), (640, 24853), (857, 18560), (928, 17140), (1160, 13712), (1714, 9280), (1856, 8570), (2320, 6856), (3428, 4640), (3712, 4285)]