18234320

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{197}}^1$

素因数の和:312

約数の個数: 80

約数和(自身を含む): 46403280

約数和(自身を除く): 28168960

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 89, 104, 130, 178, 197, 208, 260, 356, 394, 445, 520, 712, 788, 890, 985, 1040, 1157, 1424, 1576, 1780, 1970, 2314, 2561, 3152, 3560, 3940, 4628, 5122, 5785, 7120, 7880, 9256, 10244, 11570, 12805, 15760, 17533, 18512, 20488, 23140, 25610, 35066, 40976, 46280, 51220, 70132, 87665, 92560, 102440, 140264, 175330, 204880, 227929, 280528, 350660, 455858, 701320, 911716, 1139645, 1402640, 1823432, 2279290, 3646864, 4558580, 9117160, 18234320]

約数ペア:

[(1, 18234320), (2, 9117160), (4, 4558580), (5, 3646864), (8, 2279290), (10, 1823432), (13, 1402640), (16, 1139645), (20, 911716), (26, 701320), (40, 455858), (52, 350660), (65, 280528), (80, 227929), (89, 204880), (104, 175330), (130, 140264), (178, 102440), (197, 92560), (208, 87665), (260, 70132), (356, 51220), (394, 46280), (445, 40976), (520, 35066), (712, 25610), (788, 23140), (890, 20488), (985, 18512), (1040, 17533), (1157, 15760), (1424, 12805), (1576, 11570), (1780, 10244), (1970, 9256), (2314, 7880), (2561, 7120), (3152, 5785), (3560, 5122), (3940, 4628)]