20972757

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{227}}^1$

素因数の和:369

約数の個数: 32

約数和(自身を含む): 31868928

約数和(自身を除く): 10896171

約数列:

[1, 3, 13, 23, 39, 69, 103, 227, 299, 309, 681, 897, 1339, 2369, 2951, 4017, 5221, 7107, 8853, 15663, 23381, 30797, 67873, 70143, 92391, 203619, 303953, 537763, 911859, 1613289, 6990919, 20972757]

約数ペア:

[(1, 20972757), (3, 6990919), (13, 1613289), (23, 911859), (39, 537763), (69, 303953), (103, 203619), (227, 92391), (299, 70143), (309, 67873), (681, 30797), (897, 23381), (1339, 15663), (2369, 8853), (2951, 7107), (4017, 5221)]