18821296

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{2207}}^1$

素因数の和:2269

約数の個数: 40

約数和(自身を含む): 40247424

約数和(自身を除く): 21426128

約数列:

[1, 2, 4, 8, 13, 16, 26, 41, 52, 82, 104, 164, 208, 328, 533, 656, 1066, 2132, 2207, 4264, 4414, 8528, 8828, 17656, 28691, 35312, 57382, 90487, 114764, 180974, 229528, 361948, 459056, 723896, 1176331, 1447792, 2352662, 4705324, 9410648, 18821296]

約数ペア:

[(1, 18821296), (2, 9410648), (4, 4705324), (8, 2352662), (13, 1447792), (16, 1176331), (26, 723896), (41, 459056), (52, 361948), (82, 229528), (104, 180974), (164, 114764), (208, 90487), (328, 57382), (533, 35312), (656, 28691), (1066, 17656), (2132, 8828), (2207, 8528), (4264, 4414)]