19901325

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{139}}^1$

素因数の和:258

約数の個数: 48

約数和(自身を含む): 34997760

約数和(自身を除く): 15096435

約数列:

[1, 3, 5, 15, 23, 25, 69, 75, 83, 115, 139, 249, 345, 415, 417, 575, 695, 1245, 1725, 1909, 2075, 2085, 3197, 3475, 5727, 6225, 9545, 9591, 10425, 11537, 15985, 28635, 34611, 47725, 47955, 57685, 79925, 143175, 173055, 239775, 265351, 288425, 796053, 865275, 1326755, 3980265, 6633775, 19901325]

約数ペア:

[(1, 19901325), (3, 6633775), (5, 3980265), (15, 1326755), (23, 865275), (25, 796053), (69, 288425), (75, 265351), (83, 239775), (115, 173055), (139, 143175), (249, 79925), (345, 57685), (415, 47955), (417, 47725), (575, 34611), (695, 28635), (1245, 15985), (1725, 11537), (1909, 10425), (2075, 9591), (2085, 9545), (3197, 6225), (3475, 5727)]