20871478

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{353}}^1$

素因数の和:456

約数の個数: 32

約数和(自身を含む): 34867584

約数和(自身を除く): 13996106

約数列:

[1, 2, 17, 34, 37, 47, 74, 94, 353, 629, 706, 799, 1258, 1598, 1739, 3478, 6001, 12002, 13061, 16591, 26122, 29563, 33182, 59126, 222037, 282047, 444074, 564094, 613867, 1227734, 10435739, 20871478]

約数ペア:

[(1, 20871478), (2, 10435739), (17, 1227734), (34, 613867), (37, 564094), (47, 444074), (74, 282047), (94, 222037), (353, 59126), (629, 33182), (706, 29563), (799, 26122), (1258, 16591), (1598, 13061), (1739, 12002), (3478, 6001)]