21108016

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{1093}}^1$

素因数の和:1189

約数の個数: 40

約数和(自身を含む): 43952544

約数和(自身を除く): 22844528

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 71, 136, 142, 272, 284, 568, 1093, 1136, 1207, 2186, 2414, 4372, 4828, 8744, 9656, 17488, 18581, 19312, 37162, 74324, 77603, 148648, 155206, 297296, 310412, 620824, 1241648, 1319251, 2638502, 5277004, 10554008, 21108016]

約数ペア:

[(1, 21108016), (2, 10554008), (4, 5277004), (8, 2638502), (16, 1319251), (17, 1241648), (34, 620824), (68, 310412), (71, 297296), (136, 155206), (142, 148648), (272, 77603), (284, 74324), (568, 37162), (1093, 19312), (1136, 18581), (1207, 17488), (2186, 9656), (2414, 8744), (4372, 4828)]