81863860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{1759}}^1$

素因数の和:1960

約数の個数: 48

約数和(自身を含む): 186278400

約数和(自身を除く): 104414540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 179, 260, 358, 716, 895, 1759, 1790, 2327, 3518, 3580, 4654, 7036, 8795, 9308, 11635, 17590, 22867, 23270, 35180, 45734, 46540, 91468, 114335, 228670, 314861, 457340, 629722, 1259444, 1574305, 3148610, 4093193, 6297220, 8186386, 16372772, 20465965, 40931930, 81863860]

約数ペア:

[(1, 81863860), (2, 40931930), (4, 20465965), (5, 16372772), (10, 8186386), (13, 6297220), (20, 4093193), (26, 3148610), (52, 1574305), (65, 1259444), (130, 629722), (179, 457340), (260, 314861), (358, 228670), (716, 114335), (895, 91468), (1759, 46540), (1790, 45734), (2327, 35180), (3518, 23270), (3580, 22867), (4654, 17590), (7036, 11635), (8795, 9308)]