21493845

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1093}}^1$

素因数の和:1146

約数の個数: 48

約数和(自身を含む): 40959360

約数和(自身を除く): 19465515

約数列:

[1, 3, 5, 9, 15, 19, 23, 45, 57, 69, 95, 115, 171, 207, 285, 345, 437, 855, 1035, 1093, 1311, 2185, 3279, 3933, 5465, 6555, 9837, 16395, 19665, 20767, 25139, 49185, 62301, 75417, 103835, 125695, 186903, 226251, 311505, 377085, 477641, 934515, 1131255, 1432923, 2388205, 4298769, 7164615, 21493845]

約数ペア:

[(1, 21493845), (3, 7164615), (5, 4298769), (9, 2388205), (15, 1432923), (19, 1131255), (23, 934515), (45, 477641), (57, 377085), (69, 311505), (95, 226251), (115, 186903), (171, 125695), (207, 103835), (285, 75417), (345, 62301), (437, 49185), (855, 25139), (1035, 20767), (1093, 19665), (1311, 16395), (2185, 9837), (3279, 6555), (3933, 5465)]