17720235

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{439}}^1$

素因数の和:489

約数の個数: 64

約数和(自身を含む): 35481600

約数和(自身を除く): 17761365

約数列:

[1, 3, 5, 9, 13, 15, 23, 27, 39, 45, 65, 69, 115, 117, 135, 195, 207, 299, 345, 351, 439, 585, 621, 897, 1035, 1317, 1495, 1755, 2195, 2691, 3105, 3951, 4485, 5707, 6585, 8073, 10097, 11853, 13455, 17121, 19755, 28535, 30291, 40365, 50485, 51363, 59265, 85605, 90873, 131261, 151455, 154089, 256815, 272619, 393783, 454365, 656305, 770445, 1181349, 1363095, 1968915, 3544047, 5906745, 17720235]

約数ペア:

[(1, 17720235), (3, 5906745), (5, 3544047), (9, 1968915), (13, 1363095), (15, 1181349), (23, 770445), (27, 656305), (39, 454365), (45, 393783), (65, 272619), (69, 256815), (115, 154089), (117, 151455), (135, 131261), (195, 90873), (207, 85605), (299, 59265), (345, 51363), (351, 50485), (439, 40365), (585, 30291), (621, 28535), (897, 19755), (1035, 17121), (1317, 13455), (1495, 11853), (1755, 10097), (2195, 8073), (2691, 6585), (3105, 5707), (3951, 4485)]