20812960

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18583}}^1$

素因数の和:18605

約数の個数: 48

約数和(自身を含む): 56198016

約数和(自身を除く): 35385056

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 18583, 37166, 74332, 92915, 130081, 148664, 185830, 260162, 297328, 371660, 520324, 594656, 650405, 743320, 1040648, 1300810, 1486640, 2081296, 2601620, 2973280, 4162592, 5203240, 10406480, 20812960]

約数ペア:

[(1, 20812960), (2, 10406480), (4, 5203240), (5, 4162592), (7, 2973280), (8, 2601620), (10, 2081296), (14, 1486640), (16, 1300810), (20, 1040648), (28, 743320), (32, 650405), (35, 594656), (40, 520324), (56, 371660), (70, 297328), (80, 260162), (112, 185830), (140, 148664), (160, 130081), (224, 92915), (280, 74332), (560, 37166), (1120, 18583)]