20975994

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{5273}}^1$

素因数の和:5311

約数の個数: 48

約数和(自身を含む): 51832872

約数和(自身を除く): 30856878

約数列:

[1, 2, 3, 6, 9, 13, 17, 18, 26, 34, 39, 51, 78, 102, 117, 153, 221, 234, 306, 442, 663, 1326, 1989, 3978, 5273, 10546, 15819, 31638, 47457, 68549, 89641, 94914, 137098, 179282, 205647, 268923, 411294, 537846, 616941, 806769, 1165333, 1233882, 1613538, 2330666, 3495999, 6991998, 10487997, 20975994]

約数ペア:

[(1, 20975994), (2, 10487997), (3, 6991998), (6, 3495999), (9, 2330666), (13, 1613538), (17, 1233882), (18, 1165333), (26, 806769), (34, 616941), (39, 537846), (51, 411294), (78, 268923), (102, 205647), (117, 179282), (153, 137098), (221, 94914), (234, 89641), (306, 68549), (442, 47457), (663, 31638), (1326, 15819), (1989, 10546), (3978, 5273)]