20427472

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1$

素因数の和:200

約数の個数: 80

約数和(自身を含む): 46403280

約数和(自身を除く): 25975808

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 52, 53, 68, 104, 106, 109, 136, 208, 212, 218, 221, 272, 424, 436, 442, 689, 848, 872, 884, 901, 1378, 1417, 1744, 1768, 1802, 1853, 2756, 2834, 3536, 3604, 3706, 5512, 5668, 5777, 7208, 7412, 11024, 11336, 11554, 11713, 14416, 14824, 22672, 23108, 23426, 24089, 29648, 46216, 46852, 48178, 75101, 92432, 93704, 96356, 98209, 150202, 187408, 192712, 196418, 300404, 385424, 392836, 600808, 785672, 1201616, 1276717, 1571344, 2553434, 5106868, 10213736, 20427472]

約数ペア:

[(1, 20427472), (2, 10213736), (4, 5106868), (8, 2553434), (13, 1571344), (16, 1276717), (17, 1201616), (26, 785672), (34, 600808), (52, 392836), (53, 385424), (68, 300404), (104, 196418), (106, 192712), (109, 187408), (136, 150202), (208, 98209), (212, 96356), (218, 93704), (221, 92432), (272, 75101), (424, 48178), (436, 46852), (442, 46216), (689, 29648), (848, 24089), (872, 23426), (884, 23108), (901, 22672), (1378, 14824), (1417, 14416), (1744, 11713), (1768, 11554), (1802, 11336), (1853, 11024), (2756, 7412), (2834, 7208), (3536, 5777), (3604, 5668), (3706, 5512)]