7911220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{191}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 17740800

約数和(自身を除く): 9829580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 109, 190, 191, 218, 380, 382, 436, 545, 764, 955, 1090, 1910, 2071, 2180, 3629, 3820, 4142, 7258, 8284, 10355, 14516, 18145, 20710, 20819, 36290, 41420, 41638, 72580, 83276, 104095, 208190, 395561, 416380, 791122, 1582244, 1977805, 3955610, 7911220]

約数ペア:

[(1, 7911220), (2, 3955610), (4, 1977805), (5, 1582244), (10, 791122), (19, 416380), (20, 395561), (38, 208190), (76, 104095), (95, 83276), (109, 72580), (190, 41638), (191, 41420), (218, 36290), (380, 20819), (382, 20710), (436, 18145), (545, 14516), (764, 10355), (955, 8284), (1090, 7258), (1910, 4142), (2071, 3820), (2180, 3629)]