19828028

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{577}}^1$

素因数の和:674

約数の個数: 36

約数和(自身を含む): 38744496

約数和(自身を除く): 18916468

約数列:

[1, 2, 4, 11, 22, 44, 71, 121, 142, 242, 284, 484, 577, 781, 1154, 1562, 2308, 3124, 6347, 8591, 12694, 17182, 25388, 34364, 40967, 69817, 81934, 139634, 163868, 279268, 450637, 901274, 1802548, 4957007, 9914014, 19828028]

約数ペア:

[(1, 19828028), (2, 9914014), (4, 4957007), (11, 1802548), (22, 901274), (44, 450637), (71, 279268), (121, 163868), (142, 139634), (242, 81934), (284, 69817), (484, 40967), (577, 34364), (781, 25388), (1154, 17182), (1562, 12694), (2308, 8591), (3124, 6347)]