21787144431

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{401}}^1\times {\mathrm{12781}}^1$

素因数の和:13307

約数の個数: 32

約数和(自身を含む): 31652322240

約数和(自身を除く): 9865177809

約数列:

[1, 3, 13, 39, 109, 327, 401, 1203, 1417, 4251, 5213, 12781, 15639, 38343, 43709, 131127, 166153, 498459, 568217, 1393129, 1704651, 4179387, 5125181, 15375543, 18110677, 54332031, 66627353, 199882059, 558644729, 1675934187, 7262381477, 21787144431]

約数ペア:

[(1, 21787144431), (3, 7262381477), (13, 1675934187), (39, 558644729), (109, 199882059), (327, 66627353), (401, 54332031), (1203, 18110677), (1417, 15375543), (4251, 5125181), (5213, 4179387), (12781, 1704651), (15639, 1393129), (38343, 568217), (43709, 498459), (131127, 166153)]