2501000

素因数分解:

$2^3\times 5^3\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:123

約数の個数: 64

約数和(自身を含む): 6093360

約数和(自身を除く): 3592360

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 41, 50, 61, 82, 100, 122, 125, 164, 200, 205, 244, 250, 305, 328, 410, 488, 500, 610, 820, 1000, 1025, 1220, 1525, 1640, 2050, 2440, 2501, 3050, 4100, 5002, 5125, 6100, 7625, 8200, 10004, 10250, 12200, 12505, 15250, 20008, 20500, 25010, 30500, 41000, 50020, 61000, 62525, 100040, 125050, 250100, 312625, 500200, 625250, 1250500, 2501000]

約数ペア:

[(1, 2501000), (2, 1250500), (4, 625250), (5, 500200), (8, 312625), (10, 250100), (20, 125050), (25, 100040), (40, 62525), (41, 61000), (50, 50020), (61, 41000), (82, 30500), (100, 25010), (122, 20500), (125, 20008), (164, 15250), (200, 12505), (205, 12200), (244, 10250), (250, 10004), (305, 8200), (328, 7625), (410, 6100), (488, 5125), (500, 5002), (610, 4100), (820, 3050), (1000, 2501), (1025, 2440), (1220, 2050), (1525, 1640)]