20218653

素因数分解:

$3^4\times 7^1\times {\mathrm{13}}^2\times {\mathrm{211}}^1$

素因数の和:256

約数の個数: 60

約数和(自身を含む): 37554528

約数和(自身を除く): 17335875

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 81, 91, 117, 169, 189, 211, 273, 351, 507, 567, 633, 819, 1053, 1183, 1477, 1521, 1899, 2457, 2743, 3549, 4431, 4563, 5697, 7371, 8229, 10647, 13293, 13689, 17091, 19201, 24687, 31941, 35659, 39879, 57603, 74061, 95823, 106977, 119637, 172809, 222183, 249613, 320931, 518427, 748839, 962793, 1555281, 2246517, 2888379, 6739551, 20218653]

約数ペア:

[(1, 20218653), (3, 6739551), (7, 2888379), (9, 2246517), (13, 1555281), (21, 962793), (27, 748839), (39, 518427), (63, 320931), (81, 249613), (91, 222183), (117, 172809), (169, 119637), (189, 106977), (211, 95823), (273, 74061), (351, 57603), (507, 39879), (567, 35659), (633, 31941), (819, 24687), (1053, 19201), (1183, 17091), (1477, 13689), (1521, 13293), (1899, 10647), (2457, 8229), (2743, 7371), (3549, 5697), (4431, 4563)]