31811840

素因数分解:

$2^8\times 5^1\times {\mathrm{29}}^1\times {\mathrm{857}}^1$

素因数の和:907

約数の個数: 72

約数和(自身を含む): 78918840

約数和(自身を除く): 47107000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 64, 80, 116, 128, 145, 160, 232, 256, 290, 320, 464, 580, 640, 857, 928, 1160, 1280, 1714, 1856, 2320, 3428, 3712, 4285, 4640, 6856, 7424, 8570, 9280, 13712, 17140, 18560, 24853, 27424, 34280, 37120, 49706, 54848, 68560, 99412, 109696, 124265, 137120, 198824, 219392, 248530, 274240, 397648, 497060, 548480, 795296, 994120, 1096960, 1590592, 1988240, 3181184, 3976480, 6362368, 7952960, 15905920, 31811840]

約数ペア:

[(1, 31811840), (2, 15905920), (4, 7952960), (5, 6362368), (8, 3976480), (10, 3181184), (16, 1988240), (20, 1590592), (29, 1096960), (32, 994120), (40, 795296), (58, 548480), (64, 497060), (80, 397648), (116, 274240), (128, 248530), (145, 219392), (160, 198824), (232, 137120), (256, 124265), (290, 109696), (320, 99412), (464, 68560), (580, 54848), (640, 49706), (857, 37120), (928, 34280), (1160, 27424), (1280, 24853), (1714, 18560), (1856, 17140), (2320, 13712), (3428, 9280), (3712, 8570), (4285, 7424), (4640, 6856)]