21109120

素因数分解:

$2^7\times 5^1\times {\mathrm{32983}}^1$

素因数の和:33002

約数の個数: 32

約数和(自身を含む): 50465520

約数和(自身を除く): 29356400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 32983, 65966, 131932, 164915, 263864, 329830, 527728, 659660, 1055456, 1319320, 2110912, 2638640, 4221824, 5277280, 10554560, 21109120]

約数ペア:

[(1, 21109120), (2, 10554560), (4, 5277280), (5, 4221824), (8, 2638640), (10, 2110912), (16, 1319320), (20, 1055456), (32, 659660), (40, 527728), (64, 329830), (80, 263864), (128, 164915), (160, 131932), (320, 65966), (640, 32983)]