21458560

素因数分解:

$2^7\times 5^1\times {\mathrm{33529}}^1$

素因数の和:33548

約数の個数: 32

約数和(自身を含む): 51300900

約数和(自身を除く): 29842340

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 33529, 67058, 134116, 167645, 268232, 335290, 536464, 670580, 1072928, 1341160, 2145856, 2682320, 4291712, 5364640, 10729280, 21458560]

約数ペア:

[(1, 21458560), (2, 10729280), (4, 5364640), (5, 4291712), (8, 2682320), (10, 2145856), (16, 1341160), (20, 1072928), (32, 670580), (40, 536464), (64, 335290), (80, 268232), (128, 167645), (160, 134116), (320, 67058), (640, 33529)]