38125000

素因数分解:

$2^3\times 5^7\times {\mathrm{61}}^1$

素因数の和:102

約数の個数: 64

約数和(自身を含む): 90820080

約数和(自身を除く): 52695080

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 61, 100, 122, 125, 200, 244, 250, 305, 488, 500, 610, 625, 1000, 1220, 1250, 1525, 2440, 2500, 3050, 3125, 5000, 6100, 6250, 7625, 12200, 12500, 15250, 15625, 25000, 30500, 31250, 38125, 61000, 62500, 76250, 78125, 125000, 152500, 156250, 190625, 305000, 312500, 381250, 625000, 762500, 953125, 1525000, 1906250, 3812500, 4765625, 7625000, 9531250, 19062500, 38125000]

約数ペア:

[(1, 38125000), (2, 19062500), (4, 9531250), (5, 7625000), (8, 4765625), (10, 3812500), (20, 1906250), (25, 1525000), (40, 953125), (50, 762500), (61, 625000), (100, 381250), (122, 312500), (125, 305000), (200, 190625), (244, 156250), (250, 152500), (305, 125000), (488, 78125), (500, 76250), (610, 62500), (625, 61000), (1000, 38125), (1220, 31250), (1250, 30500), (1525, 25000), (2440, 15625), (2500, 15250), (3050, 12500), (3125, 12200), (5000, 7625), (6100, 6250)]