21180710

素因数分解:

$2^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{101}}^1\times {\mathrm{313}}^1$

素因数の和:488

約数の個数: 32

約数和(自身を含む): 39202272

約数和(自身を除く): 18021562

約数列:

[1, 2, 5, 10, 67, 101, 134, 202, 313, 335, 505, 626, 670, 1010, 1565, 3130, 6767, 13534, 20971, 31613, 33835, 41942, 63226, 67670, 104855, 158065, 209710, 316130, 2118071, 4236142, 10590355, 21180710]

約数ペア:

[(1, 21180710), (2, 10590355), (5, 4236142), (10, 2118071), (67, 316130), (101, 209710), (134, 158065), (202, 104855), (313, 67670), (335, 63226), (505, 41942), (626, 33835), (670, 31613), (1010, 20971), (1565, 13534), (3130, 6767)]