18486279

素因数分解:

$3^3\times 7^2\times {\mathrm{89}}^1\times {\mathrm{157}}^1$

素因数の和:269

約数の個数: 48

約数和(自身を含む): 32421600

約数和(自身を除く): 13935321

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 89, 147, 157, 189, 267, 441, 471, 623, 801, 1099, 1323, 1413, 1869, 2403, 3297, 4239, 4361, 5607, 7693, 9891, 13083, 13973, 16821, 23079, 29673, 39249, 41919, 69237, 97811, 117747, 125757, 207711, 293433, 377271, 684677, 880299, 2054031, 2640897, 6162093, 18486279]

約数ペア:

[(1, 18486279), (3, 6162093), (7, 2640897), (9, 2054031), (21, 880299), (27, 684677), (49, 377271), (63, 293433), (89, 207711), (147, 125757), (157, 117747), (189, 97811), (267, 69237), (441, 41919), (471, 39249), (623, 29673), (801, 23079), (1099, 16821), (1323, 13973), (1413, 13083), (1869, 9891), (2403, 7693), (3297, 5607), (4239, 4361)]