21253750

素因数分解:

$2^1\times 5^4\times 7^2\times {\mathrm{347}}^1$

素因数の和:383

約数の個数: 60

約数和(自身を含む): 46475748

約数和(自身を除く): 25221998

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 49, 50, 70, 98, 125, 175, 245, 250, 347, 350, 490, 625, 694, 875, 1225, 1250, 1735, 1750, 2429, 2450, 3470, 4375, 4858, 6125, 8675, 8750, 12145, 12250, 17003, 17350, 24290, 30625, 34006, 43375, 60725, 61250, 85015, 86750, 121450, 170030, 216875, 303625, 425075, 433750, 607250, 850150, 1518125, 2125375, 3036250, 4250750, 10626875, 21253750]

約数ペア:

[(1, 21253750), (2, 10626875), (5, 4250750), (7, 3036250), (10, 2125375), (14, 1518125), (25, 850150), (35, 607250), (49, 433750), (50, 425075), (70, 303625), (98, 216875), (125, 170030), (175, 121450), (245, 86750), (250, 85015), (347, 61250), (350, 60725), (490, 43375), (625, 34006), (694, 30625), (875, 24290), (1225, 17350), (1250, 17003), (1735, 12250), (1750, 12145), (2429, 8750), (2450, 8675), (3470, 6125), (4375, 4858)]