21260218

素因数分解:

$2^1\times 7^2\times {\mathrm{401}}^1\times {\mathrm{541}}^1$

素因数の和:958

約数の個数: 24

約数和(自身を含む): 37258164

約数和(自身を除く): 15997946

約数列:

[1, 2, 7, 14, 49, 98, 401, 541, 802, 1082, 2807, 3787, 5614, 7574, 19649, 26509, 39298, 53018, 216941, 433882, 1518587, 3037174, 10630109, 21260218]

約数ペア:

[(1, 21260218), (2, 10630109), (7, 3037174), (14, 1518587), (49, 433882), (98, 216941), (401, 53018), (541, 39298), (802, 26509), (1082, 19649), (2807, 7574), (3787, 5614)]