20818744

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{3257}}^1$

素因数の和:3327

約数の個数: 32

約数和(自身を含む): 42223680

約数和(自身を除く): 21404936

約数列:

[1, 2, 4, 8, 17, 34, 47, 68, 94, 136, 188, 376, 799, 1598, 3196, 3257, 6392, 6514, 13028, 26056, 55369, 110738, 153079, 221476, 306158, 442952, 612316, 1224632, 2602343, 5204686, 10409372, 20818744]

約数ペア:

[(1, 20818744), (2, 10409372), (4, 5204686), (8, 2602343), (17, 1224632), (34, 612316), (47, 442952), (68, 306158), (94, 221476), (136, 153079), (188, 110738), (376, 55369), (799, 26056), (1598, 13028), (3196, 6514), (3257, 6392)]