19218213

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{157}}^1$

素因数の和:266

約数の個数: 48

約数和(自身を含む): 33521280

約数和(自身を除く): 14303067

約数列:

[1, 3, 7, 9, 21, 29, 63, 67, 87, 157, 201, 203, 261, 469, 471, 603, 609, 1099, 1407, 1413, 1827, 1943, 3297, 4221, 4553, 5829, 9891, 10519, 13601, 13659, 17487, 31557, 31871, 40803, 40977, 73633, 94671, 95613, 122409, 220899, 286839, 305051, 662697, 915153, 2135357, 2745459, 6406071, 19218213]

約数ペア:

[(1, 19218213), (3, 6406071), (7, 2745459), (9, 2135357), (21, 915153), (29, 662697), (63, 305051), (67, 286839), (87, 220899), (157, 122409), (201, 95613), (203, 94671), (261, 73633), (469, 40977), (471, 40803), (603, 31871), (609, 31557), (1099, 17487), (1407, 13659), (1413, 13601), (1827, 10519), (1943, 9891), (3297, 5829), (4221, 4553)]