72123513

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1$

素因数の和:254

約数の個数: 64

約数和(自身を含む): 125908992

約数和(自身を除く): 53785479

約数列:

[1, 3, 7, 11, 21, 33, 43, 53, 77, 129, 137, 159, 231, 301, 371, 411, 473, 583, 903, 959, 1113, 1419, 1507, 1749, 2279, 2877, 3311, 4081, 4521, 5891, 6837, 7261, 9933, 10549, 12243, 15953, 17673, 21783, 25069, 31647, 41237, 47859, 50827, 64801, 75207, 79871, 123711, 152481, 175483, 194403, 239613, 312223, 453607, 526449, 559097, 936669, 1360821, 1677291, 2185561, 3434453, 6556683, 10303359, 24041171, 72123513]

約数ペア:

[(1, 72123513), (3, 24041171), (7, 10303359), (11, 6556683), (21, 3434453), (33, 2185561), (43, 1677291), (53, 1360821), (77, 936669), (129, 559097), (137, 526449), (159, 453607), (231, 312223), (301, 239613), (371, 194403), (411, 175483), (473, 152481), (583, 123711), (903, 79871), (959, 75207), (1113, 64801), (1419, 50827), (1507, 47859), (1749, 41237), (2279, 31647), (2877, 25069), (3311, 21783), (4081, 17673), (4521, 15953), (5891, 12243), (6837, 10549), (7261, 9933)]