19807864

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{811}}^1$

素因数の和:931

約数の個数: 32

約数和(自身を含む): 38586240

約数和(自身を除く): 18778376

約数列:

[1, 2, 4, 8, 43, 71, 86, 142, 172, 284, 344, 568, 811, 1622, 3053, 3244, 6106, 6488, 12212, 24424, 34873, 57581, 69746, 115162, 139492, 230324, 278984, 460648, 2475983, 4951966, 9903932, 19807864]

約数ペア:

[(1, 19807864), (2, 9903932), (4, 4951966), (8, 2475983), (43, 460648), (71, 278984), (86, 230324), (142, 139492), (172, 115162), (284, 69746), (344, 57581), (568, 34873), (811, 24424), (1622, 12212), (3053, 6488), (3244, 6106)]