20105600

素因数分解:

$2^7\times 5^2\times {\mathrm{61}}^1\times {\mathrm{103}}^1$

素因数の和:188

約数の個数: 96

約数和(自身を含む): 50971440

約数和(自身を除く): 30865840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 61, 64, 80, 100, 103, 122, 128, 160, 200, 206, 244, 305, 320, 400, 412, 488, 515, 610, 640, 800, 824, 976, 1030, 1220, 1525, 1600, 1648, 1952, 2060, 2440, 2575, 3050, 3200, 3296, 3904, 4120, 4880, 5150, 6100, 6283, 6592, 7808, 8240, 9760, 10300, 12200, 12566, 13184, 16480, 19520, 20600, 24400, 25132, 31415, 32960, 39040, 41200, 48800, 50264, 62830, 65920, 82400, 97600, 100528, 125660, 157075, 164800, 195200, 201056, 251320, 314150, 329600, 402112, 502640, 628300, 804224, 1005280, 1256600, 2010560, 2513200, 4021120, 5026400, 10052800, 20105600]

約数ペア:

[(1, 20105600), (2, 10052800), (4, 5026400), (5, 4021120), (8, 2513200), (10, 2010560), (16, 1256600), (20, 1005280), (25, 804224), (32, 628300), (40, 502640), (50, 402112), (61, 329600), (64, 314150), (80, 251320), (100, 201056), (103, 195200), (122, 164800), (128, 157075), (160, 125660), (200, 100528), (206, 97600), (244, 82400), (305, 65920), (320, 62830), (400, 50264), (412, 48800), (488, 41200), (515, 39040), (610, 32960), (640, 31415), (800, 25132), (824, 24400), (976, 20600), (1030, 19520), (1220, 16480), (1525, 13184), (1600, 12566), (1648, 12200), (1952, 10300), (2060, 9760), (2440, 8240), (2575, 7808), (3050, 6592), (3200, 6283), (3296, 6100), (3904, 5150), (4120, 4880)]