28280025

素因数分解:

$3^2\times 5^2\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:175

約数の個数: 72

約数和(自身を含む): 53905280

約数和(自身を除く): 25625255

約数列:

[1, 3, 5, 9, 15, 25, 37, 43, 45, 75, 79, 111, 129, 185, 215, 225, 237, 333, 387, 395, 555, 645, 711, 925, 1075, 1185, 1591, 1665, 1935, 1975, 2775, 2923, 3225, 3397, 3555, 4773, 5925, 7955, 8325, 8769, 9675, 10191, 14319, 14615, 16985, 17775, 23865, 26307, 30573, 39775, 43845, 50955, 71595, 73075, 84925, 119325, 125689, 131535, 152865, 219225, 254775, 357975, 377067, 628445, 657675, 764325, 1131201, 1885335, 3142225, 5656005, 9426675, 28280025]

約数ペア:

[(1, 28280025), (3, 9426675), (5, 5656005), (9, 3142225), (15, 1885335), (25, 1131201), (37, 764325), (43, 657675), (45, 628445), (75, 377067), (79, 357975), (111, 254775), (129, 219225), (185, 152865), (215, 131535), (225, 125689), (237, 119325), (333, 84925), (387, 73075), (395, 71595), (555, 50955), (645, 43845), (711, 39775), (925, 30573), (1075, 26307), (1185, 23865), (1591, 17775), (1665, 16985), (1935, 14615), (1975, 14319), (2775, 10191), (2923, 9675), (3225, 8769), (3397, 8325), (3555, 7955), (4773, 5925)]