21922160

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{197}}^1$

素因数の和:330

約数の個数: 80

約数和(自身を含む): 55683936

約数和(自身を除く): 33761776

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 107, 130, 197, 208, 214, 260, 394, 428, 520, 535, 788, 856, 985, 1040, 1070, 1391, 1576, 1712, 1970, 2140, 2561, 2782, 3152, 3940, 4280, 5122, 5564, 6955, 7880, 8560, 10244, 11128, 12805, 13910, 15760, 20488, 21079, 22256, 25610, 27820, 40976, 42158, 51220, 55640, 84316, 102440, 105395, 111280, 168632, 204880, 210790, 274027, 337264, 421580, 548054, 843160, 1096108, 1370135, 1686320, 2192216, 2740270, 4384432, 5480540, 10961080, 21922160]

約数ペア:

[(1, 21922160), (2, 10961080), (4, 5480540), (5, 4384432), (8, 2740270), (10, 2192216), (13, 1686320), (16, 1370135), (20, 1096108), (26, 843160), (40, 548054), (52, 421580), (65, 337264), (80, 274027), (104, 210790), (107, 204880), (130, 168632), (197, 111280), (208, 105395), (214, 102440), (260, 84316), (394, 55640), (428, 51220), (520, 42158), (535, 40976), (788, 27820), (856, 25610), (985, 22256), (1040, 21079), (1070, 20488), (1391, 15760), (1576, 13910), (1712, 12805), (1970, 11128), (2140, 10244), (2561, 8560), (2782, 7880), (3152, 6955), (3940, 5564), (4280, 5122)]