21297616

素因数分解:

$2^4\times {\mathrm{491}}^1\times {\mathrm{2711}}^1$

素因数の和:3210

約数の個数: 20

約数和(自身を含む): 41363424

約数和(自身を除く): 20065808

約数列:

[1, 2, 4, 8, 16, 491, 982, 1964, 2711, 3928, 5422, 7856, 10844, 21688, 43376, 1331101, 2662202, 5324404, 10648808, 21297616]

約数ペア:

[(1, 21297616), (2, 10648808), (4, 5324404), (8, 2662202), (16, 1331101), (491, 43376), (982, 21688), (1964, 10844), (2711, 7856), (3928, 5422)]