19828731

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{53}}^2\times {\mathrm{181}}^1$

素因数の和:303

約数の個数: 24

約数和(自身を含む): 29179696

約数和(自身を除く): 9350965

約数列:

[1, 3, 13, 39, 53, 159, 181, 543, 689, 2067, 2353, 2809, 7059, 8427, 9593, 28779, 36517, 109551, 124709, 374127, 508429, 1525287, 6609577, 19828731]

約数ペア:

[(1, 19828731), (3, 6609577), (13, 1525287), (39, 508429), (53, 374127), (159, 124709), (181, 109551), (543, 36517), (689, 28779), (2067, 9593), (2353, 8427), (2809, 7059)]