20503600

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{3943}}^1$

素因数の和:3974

約数の個数: 60

約数和(自身を含む): 53062576

約数和(自身を除く): 32558976

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 325, 400, 520, 650, 1040, 1300, 2600, 3943, 5200, 7886, 15772, 19715, 31544, 39430, 51259, 63088, 78860, 98575, 102518, 157720, 197150, 205036, 256295, 315440, 394300, 410072, 512590, 788600, 820144, 1025180, 1281475, 1577200, 2050360, 2562950, 4100720, 5125900, 10251800, 20503600]

約数ペア:

[(1, 20503600), (2, 10251800), (4, 5125900), (5, 4100720), (8, 2562950), (10, 2050360), (13, 1577200), (16, 1281475), (20, 1025180), (25, 820144), (26, 788600), (40, 512590), (50, 410072), (52, 394300), (65, 315440), (80, 256295), (100, 205036), (104, 197150), (130, 157720), (200, 102518), (208, 98575), (260, 78860), (325, 63088), (400, 51259), (520, 39430), (650, 31544), (1040, 19715), (1300, 15772), (2600, 7886), (3943, 5200)]