21658880

素因数分解:

$2^8\times 5^1\times {\mathrm{16921}}^1$

素因数の和:16942

約数の個数: 36

約数和(自身を含む): 51882852

約数和(自身を除く): 30223972

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 16921, 33842, 67684, 84605, 135368, 169210, 270736, 338420, 541472, 676840, 1082944, 1353680, 2165888, 2707360, 4331776, 5414720, 10829440, 21658880]

約数ペア:

[(1, 21658880), (2, 10829440), (4, 5414720), (5, 4331776), (8, 2707360), (10, 2165888), (16, 1353680), (20, 1082944), (32, 676840), (40, 541472), (64, 338420), (80, 270736), (128, 169210), (160, 135368), (256, 84605), (320, 67684), (640, 33842), (1280, 16921)]