21256860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{8641}}^1$

素因数の和:8694

約数の個数: 48

約数和(自身を含む): 60977952

約数和(自身を除く): 39721092

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 41, 60, 82, 123, 164, 205, 246, 410, 492, 615, 820, 1230, 2460, 8641, 17282, 25923, 34564, 43205, 51846, 86410, 103692, 129615, 172820, 259230, 354281, 518460, 708562, 1062843, 1417124, 1771405, 2125686, 3542810, 4251372, 5314215, 7085620, 10628430, 21256860]

約数ペア:

[(1, 21256860), (2, 10628430), (3, 7085620), (4, 5314215), (5, 4251372), (6, 3542810), (10, 2125686), (12, 1771405), (15, 1417124), (20, 1062843), (30, 708562), (41, 518460), (60, 354281), (82, 259230), (123, 172820), (164, 129615), (205, 103692), (246, 86410), (410, 51846), (492, 43205), (615, 34564), (820, 25923), (1230, 17282), (2460, 8641)]