21285784

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{3469}}^1$

素因数の和:3547

約数の個数: 32

約数和(自身を含む): 43722000

約数和(自身を除く): 22436216

約数列:

[1, 2, 4, 8, 13, 26, 52, 59, 104, 118, 236, 472, 767, 1534, 3068, 3469, 6136, 6938, 13876, 27752, 45097, 90194, 180388, 204671, 360776, 409342, 818684, 1637368, 2660723, 5321446, 10642892, 21285784]

約数ペア:

[(1, 21285784), (2, 10642892), (4, 5321446), (8, 2660723), (13, 1637368), (26, 818684), (52, 409342), (59, 360776), (104, 204671), (118, 180388), (236, 90194), (472, 45097), (767, 27752), (1534, 13876), (3068, 6938), (3469, 6136)]