31009900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^2\times {\mathrm{859}}^1$

素因数の和:911

約数の個数: 54

約数和(自身を含む): 71102220

約数和(自身を除く): 40092320

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 361, 380, 475, 722, 859, 950, 1444, 1718, 1805, 1900, 3436, 3610, 4295, 7220, 8590, 9025, 16321, 17180, 18050, 21475, 32642, 36100, 42950, 65284, 81605, 85900, 163210, 310099, 326420, 408025, 620198, 816050, 1240396, 1550495, 1632100, 3100990, 6201980, 7752475, 15504950, 31009900]

約数ペア:

[(1, 31009900), (2, 15504950), (4, 7752475), (5, 6201980), (10, 3100990), (19, 1632100), (20, 1550495), (25, 1240396), (38, 816050), (50, 620198), (76, 408025), (95, 326420), (100, 310099), (190, 163210), (361, 85900), (380, 81605), (475, 65284), (722, 42950), (859, 36100), (950, 32642), (1444, 21475), (1718, 18050), (1805, 17180), (1900, 16321), (3436, 9025), (3610, 8590), (4295, 7220)]