19020825

素因数分解:

$3^5\times 5^2\times {\mathrm{31}}^1\times {\mathrm{101}}^1$

素因数の和:157

約数の個数: 72

約数和(自身を含む): 36830976

約数和(自身を除く): 17810151

約数列:

[1, 3, 5, 9, 15, 25, 27, 31, 45, 75, 81, 93, 101, 135, 155, 225, 243, 279, 303, 405, 465, 505, 675, 775, 837, 909, 1215, 1395, 1515, 2025, 2325, 2511, 2525, 2727, 3131, 4185, 4545, 6075, 6975, 7533, 7575, 8181, 9393, 12555, 13635, 15655, 20925, 22725, 24543, 28179, 37665, 40905, 46965, 62775, 68175, 78275, 84537, 122715, 140895, 188325, 204525, 234825, 253611, 422685, 613575, 704475, 760833, 1268055, 2113425, 3804165, 6340275, 19020825]

約数ペア:

[(1, 19020825), (3, 6340275), (5, 3804165), (9, 2113425), (15, 1268055), (25, 760833), (27, 704475), (31, 613575), (45, 422685), (75, 253611), (81, 234825), (93, 204525), (101, 188325), (135, 140895), (155, 122715), (225, 84537), (243, 78275), (279, 68175), (303, 62775), (405, 46965), (465, 40905), (505, 37665), (675, 28179), (775, 24543), (837, 22725), (909, 20925), (1215, 15655), (1395, 13635), (1515, 12555), (2025, 9393), (2325, 8181), (2511, 7575), (2525, 7533), (2727, 6975), (3131, 6075), (4185, 4545)]