15250000

素因数分解:

$2^4\times 5^6\times {\mathrm{61}}^1$

素因数の和:99

約数の個数: 70

約数和(自身を含む): 37538582

約数和(自身を除く): 22288582

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 61, 80, 100, 122, 125, 200, 244, 250, 305, 400, 488, 500, 610, 625, 976, 1000, 1220, 1250, 1525, 2000, 2440, 2500, 3050, 3125, 4880, 5000, 6100, 6250, 7625, 10000, 12200, 12500, 15250, 15625, 24400, 25000, 30500, 31250, 38125, 50000, 61000, 62500, 76250, 122000, 125000, 152500, 190625, 250000, 305000, 381250, 610000, 762500, 953125, 1525000, 1906250, 3050000, 3812500, 7625000, 15250000]

約数ペア:

[(1, 15250000), (2, 7625000), (4, 3812500), (5, 3050000), (8, 1906250), (10, 1525000), (16, 953125), (20, 762500), (25, 610000), (40, 381250), (50, 305000), (61, 250000), (80, 190625), (100, 152500), (122, 125000), (125, 122000), (200, 76250), (244, 62500), (250, 61000), (305, 50000), (400, 38125), (488, 31250), (500, 30500), (610, 25000), (625, 24400), (976, 15625), (1000, 15250), (1220, 12500), (1250, 12200), (1525, 10000), (2000, 7625), (2440, 6250), (2500, 6100), (3050, 5000), (3125, 4880)]