21685160

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{77447}}^1$

素因数の和:77465

約数の個数: 32

約数和(自身を含む): 55762560

約数和(自身を除く): 34077400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 77447, 154894, 309788, 387235, 542129, 619576, 774470, 1084258, 1548940, 2168516, 2710645, 3097880, 4337032, 5421290, 10842580, 21685160]

約数ペア:

[(1, 21685160), (2, 10842580), (4, 5421290), (5, 4337032), (7, 3097880), (8, 2710645), (10, 2168516), (14, 1548940), (20, 1084258), (28, 774470), (35, 619576), (40, 542129), (56, 387235), (70, 309788), (140, 154894), (280, 77447)]