19202800

素因数分解:

$2^4\times 5^2\times {\mathrm{61}}^1\times {\mathrm{787}}^1$

素因数の和:866

約数の個数: 60

約数和(自身を含む): 46950616

約数和(自身を除く): 27747816

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 61, 80, 100, 122, 200, 244, 305, 400, 488, 610, 787, 976, 1220, 1525, 1574, 2440, 3050, 3148, 3935, 4880, 6100, 6296, 7870, 12200, 12592, 15740, 19675, 24400, 31480, 39350, 48007, 62960, 78700, 96014, 157400, 192028, 240035, 314800, 384056, 480070, 768112, 960140, 1200175, 1920280, 2400350, 3840560, 4800700, 9601400, 19202800]

約数ペア:

[(1, 19202800), (2, 9601400), (4, 4800700), (5, 3840560), (8, 2400350), (10, 1920280), (16, 1200175), (20, 960140), (25, 768112), (40, 480070), (50, 384056), (61, 314800), (80, 240035), (100, 192028), (122, 157400), (200, 96014), (244, 78700), (305, 62960), (400, 48007), (488, 39350), (610, 31480), (787, 24400), (976, 19675), (1220, 15740), (1525, 12592), (1574, 12200), (2440, 7870), (3050, 6296), (3148, 6100), (3935, 4880)]