20426553

素因数分解:

$3^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1$

素因数の和:203

約数の個数: 64

約数和(自身を含む): 37355520

約数和(自身を除く): 16928967

約数列:

[1, 3, 7, 9, 21, 23, 27, 37, 63, 69, 111, 127, 161, 189, 207, 259, 333, 381, 483, 621, 777, 851, 889, 999, 1143, 1449, 2331, 2553, 2667, 2921, 3429, 4347, 4699, 5957, 6993, 7659, 8001, 8763, 14097, 17871, 20447, 22977, 24003, 26289, 32893, 42291, 53613, 61341, 78867, 98679, 108077, 126873, 160839, 184023, 296037, 324231, 552069, 756539, 888111, 972693, 2269617, 2918079, 6808851, 20426553]

約数ペア:

[(1, 20426553), (3, 6808851), (7, 2918079), (9, 2269617), (21, 972693), (23, 888111), (27, 756539), (37, 552069), (63, 324231), (69, 296037), (111, 184023), (127, 160839), (161, 126873), (189, 108077), (207, 98679), (259, 78867), (333, 61341), (381, 53613), (483, 42291), (621, 32893), (777, 26289), (851, 24003), (889, 22977), (999, 20447), (1143, 17871), (1449, 14097), (2331, 8763), (2553, 8001), (2667, 7659), (2921, 6993), (3429, 5957), (4347, 4699)]