21740278

素因数分解:

$2^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{25457}}^1$

素因数の和:25527

約数の個数: 16

約数和(自身を含む): 37881504

約数和(自身を除く): 16141226

約数列:

[1, 2, 7, 14, 61, 122, 427, 854, 25457, 50914, 178199, 356398, 1552877, 3105754, 10870139, 21740278]

約数ペア:

[(1, 21740278), (2, 10870139), (7, 3105754), (14, 1552877), (61, 356398), (122, 178199), (427, 50914), (854, 25457)]