28385721

素因数分解:

$3^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{3851}}^1$

素因数の和:3883

約数の個数: 40

約数和(自身を含む): 52202304

約数和(自身を除く): 23816583

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 81, 91, 117, 189, 273, 351, 567, 819, 1053, 2457, 3851, 7371, 11553, 26957, 34659, 50063, 80871, 103977, 150189, 242613, 311931, 350441, 450567, 727839, 1051323, 1351701, 2183517, 3153969, 4055103, 9461907, 28385721]

約数ペア:

[(1, 28385721), (3, 9461907), (7, 4055103), (9, 3153969), (13, 2183517), (21, 1351701), (27, 1051323), (39, 727839), (63, 450567), (81, 350441), (91, 311931), (117, 242613), (189, 150189), (273, 103977), (351, 80871), (567, 50063), (819, 34659), (1053, 26957), (2457, 11553), (3851, 7371)]