219469900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{2137}}^1$

素因数の和:2243

約数の個数: 72

約数和(自身を含む): 519619520

約数和(自身を除く): 300149620

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 79, 100, 130, 158, 260, 316, 325, 395, 650, 790, 1027, 1300, 1580, 1975, 2054, 2137, 3950, 4108, 4274, 5135, 7900, 8548, 10270, 10685, 20540, 21370, 25675, 27781, 42740, 51350, 53425, 55562, 102700, 106850, 111124, 138905, 168823, 213700, 277810, 337646, 555620, 675292, 694525, 844115, 1389050, 1688230, 2194699, 2778100, 3376460, 4220575, 4389398, 8441150, 8778796, 10973495, 16882300, 21946990, 43893980, 54867475, 109734950, 219469900]

約数ペア:

[(1, 219469900), (2, 109734950), (4, 54867475), (5, 43893980), (10, 21946990), (13, 16882300), (20, 10973495), (25, 8778796), (26, 8441150), (50, 4389398), (52, 4220575), (65, 3376460), (79, 2778100), (100, 2194699), (130, 1688230), (158, 1389050), (260, 844115), (316, 694525), (325, 675292), (395, 555620), (650, 337646), (790, 277810), (1027, 213700), (1300, 168823), (1580, 138905), (1975, 111124), (2054, 106850), (2137, 102700), (3950, 55562), (4108, 53425), (4274, 51350), (5135, 42740), (7900, 27781), (8548, 25675), (10270, 21370), (10685, 20540)]