25010000

素因数分解:

$2^4\times 5^4\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:130

約数の個数: 100

約数和(自身を含む): 63045444

約数和(自身を除く): 38035444

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 41, 50, 61, 80, 82, 100, 122, 125, 164, 200, 205, 244, 250, 305, 328, 400, 410, 488, 500, 610, 625, 656, 820, 976, 1000, 1025, 1220, 1250, 1525, 1640, 2000, 2050, 2440, 2500, 2501, 3050, 3280, 4100, 4880, 5000, 5002, 5125, 6100, 7625, 8200, 10000, 10004, 10250, 12200, 12505, 15250, 16400, 20008, 20500, 24400, 25010, 25625, 30500, 38125, 40016, 41000, 50020, 51250, 61000, 62525, 76250, 82000, 100040, 102500, 122000, 125050, 152500, 200080, 205000, 250100, 305000, 312625, 410000, 500200, 610000, 625250, 1000400, 1250500, 1563125, 2501000, 3126250, 5002000, 6252500, 12505000, 25010000]

約数ペア:

[(1, 25010000), (2, 12505000), (4, 6252500), (5, 5002000), (8, 3126250), (10, 2501000), (16, 1563125), (20, 1250500), (25, 1000400), (40, 625250), (41, 610000), (50, 500200), (61, 410000), (80, 312625), (82, 305000), (100, 250100), (122, 205000), (125, 200080), (164, 152500), (200, 125050), (205, 122000), (244, 102500), (250, 100040), (305, 82000), (328, 76250), (400, 62525), (410, 61000), (488, 51250), (500, 50020), (610, 41000), (625, 40016), (656, 38125), (820, 30500), (976, 25625), (1000, 25010), (1025, 24400), (1220, 20500), (1250, 20008), (1525, 16400), (1640, 15250), (2000, 12505), (2050, 12200), (2440, 10250), (2500, 10004), (2501, 10000), (3050, 8200), (3280, 7625), (4100, 6100), (4880, 5125), (5000, 5002)]