28498480

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{18749}}^1$

素因数の和:18781

約数の個数: 40

約数和(自身を含む): 69750000

約数和(自身を除く): 41251520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 18749, 37498, 74996, 93745, 149992, 187490, 299984, 356231, 374980, 712462, 749960, 1424924, 1499920, 1781155, 2849848, 3562310, 5699696, 7124620, 14249240, 28498480]

約数ペア:

[(1, 28498480), (2, 14249240), (4, 7124620), (5, 5699696), (8, 3562310), (10, 2849848), (16, 1781155), (19, 1499920), (20, 1424924), (38, 749960), (40, 712462), (76, 374980), (80, 356231), (95, 299984), (152, 187490), (190, 149992), (304, 93745), (380, 74996), (760, 37498), (1520, 18749)]