21695283

素因数分解:

$3^5\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1$

素因数の和:198

約数の個数: 48

約数和(自身を含む): 35409920

約数和(自身を除く): 13714637

約数列:

[1, 3, 9, 19, 27, 37, 57, 81, 111, 127, 171, 243, 333, 381, 513, 703, 999, 1143, 1539, 2109, 2413, 2997, 3429, 4617, 4699, 6327, 7239, 8991, 10287, 14097, 18981, 21717, 30861, 42291, 56943, 65151, 89281, 126873, 170829, 195453, 267843, 380619, 586359, 803529, 1141857, 2410587, 7231761, 21695283]

約数ペア:

[(1, 21695283), (3, 7231761), (9, 2410587), (19, 1141857), (27, 803529), (37, 586359), (57, 380619), (81, 267843), (111, 195453), (127, 170829), (171, 126873), (243, 89281), (333, 65151), (381, 56943), (513, 42291), (703, 30861), (999, 21717), (1143, 18981), (1539, 14097), (2109, 10287), (2413, 8991), (2997, 7239), (3429, 6327), (4617, 4699)]