208654820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{151}}^1\times {\mathrm{571}}^1$

素因数の和:753

約数の個数: 72

約数和(自身を含む): 485669184

約数和(自身を除く): 277014364

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 151, 220, 242, 302, 484, 571, 604, 605, 755, 1142, 1210, 1510, 1661, 2284, 2420, 2855, 3020, 3322, 5710, 6281, 6644, 8305, 11420, 12562, 16610, 18271, 25124, 31405, 33220, 36542, 62810, 69091, 73084, 86221, 91355, 125620, 138182, 172442, 182710, 276364, 344884, 345455, 365420, 431105, 690910, 862210, 948431, 1381820, 1724420, 1896862, 3793724, 4742155, 9484310, 10432741, 18968620, 20865482, 41730964, 52163705, 104327410, 208654820]

約数ペア:

[(1, 208654820), (2, 104327410), (4, 52163705), (5, 41730964), (10, 20865482), (11, 18968620), (20, 10432741), (22, 9484310), (44, 4742155), (55, 3793724), (110, 1896862), (121, 1724420), (151, 1381820), (220, 948431), (242, 862210), (302, 690910), (484, 431105), (571, 365420), (604, 345455), (605, 344884), (755, 276364), (1142, 182710), (1210, 172442), (1510, 138182), (1661, 125620), (2284, 91355), (2420, 86221), (2855, 73084), (3020, 69091), (3322, 62810), (5710, 36542), (6281, 33220), (6644, 31405), (8305, 25124), (11420, 18271), (12562, 16610)]