21997708

素因数分解:

$2^2\times {\mathrm{67}}^1\times {\mathrm{79}}^1\times {\mathrm{1039}}^1$

素因数の和:1189

約数の個数: 24

約数和(自身を含む): 39603200

約数和(自身を除く): 17605492

約数列:

[1, 2, 4, 67, 79, 134, 158, 268, 316, 1039, 2078, 4156, 5293, 10586, 21172, 69613, 82081, 139226, 164162, 278452, 328324, 5499427, 10998854, 21997708]

約数ペア:

[(1, 21997708), (2, 10998854), (4, 5499427), (67, 328324), (79, 278452), (134, 164162), (158, 139226), (268, 82081), (316, 69613), (1039, 21172), (2078, 10586), (4156, 5293)]