18765320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{2311}}^1$

素因数の和:2358

約数の個数: 64

約数和(自身を含む): 49939200

約数和(自身を除く): 31173880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 40, 56, 58, 70, 116, 140, 145, 203, 232, 280, 290, 406, 580, 812, 1015, 1160, 1624, 2030, 2311, 4060, 4622, 8120, 9244, 11555, 16177, 18488, 23110, 32354, 46220, 64708, 67019, 80885, 92440, 129416, 134038, 161770, 268076, 323540, 335095, 469133, 536152, 647080, 670190, 938266, 1340380, 1876532, 2345665, 2680760, 3753064, 4691330, 9382660, 18765320]

約数ペア:

[(1, 18765320), (2, 9382660), (4, 4691330), (5, 3753064), (7, 2680760), (8, 2345665), (10, 1876532), (14, 1340380), (20, 938266), (28, 670190), (29, 647080), (35, 536152), (40, 469133), (56, 335095), (58, 323540), (70, 268076), (116, 161770), (140, 134038), (145, 129416), (203, 92440), (232, 80885), (280, 67019), (290, 64708), (406, 46220), (580, 32354), (812, 23110), (1015, 18488), (1160, 16177), (1624, 11555), (2030, 9244), (2311, 8120), (4060, 4622)]