20989938

素因数分解:

$2^1\times 3^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{1709}}^1$

素因数の和:1826

約数の個数: 32

約数和(自身を含む): 44323200

約数和(自身を除く): 23333262

約数列:

[1, 2, 3, 6, 23, 46, 69, 89, 138, 178, 267, 534, 1709, 2047, 3418, 4094, 5127, 6141, 10254, 12282, 39307, 78614, 117921, 152101, 235842, 304202, 456303, 912606, 3498323, 6996646, 10494969, 20989938]

約数ペア:

[(1, 20989938), (2, 10494969), (3, 6996646), (6, 3498323), (23, 912606), (46, 456303), (69, 304202), (89, 235842), (138, 152101), (178, 117921), (267, 78614), (534, 39307), (1709, 12282), (2047, 10254), (3418, 6141), (4094, 5127)]