19020780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{421}}^1$

素因数の和:687

約数の個数: 72

約数和(自身を含む): 58063824

約数和(自身を除く): 39043044

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 251, 421, 502, 753, 842, 1004, 1255, 1263, 1506, 1684, 2105, 2259, 2510, 2526, 3012, 3765, 3789, 4210, 4518, 5020, 5052, 6315, 7530, 7578, 8420, 9036, 11295, 12630, 15060, 15156, 18945, 22590, 25260, 37890, 45180, 75780, 105671, 211342, 317013, 422684, 528355, 634026, 951039, 1056710, 1268052, 1585065, 1902078, 2113420, 3170130, 3804156, 4755195, 6340260, 9510390, 19020780]

約数ペア:

[(1, 19020780), (2, 9510390), (3, 6340260), (4, 4755195), (5, 3804156), (6, 3170130), (9, 2113420), (10, 1902078), (12, 1585065), (15, 1268052), (18, 1056710), (20, 951039), (30, 634026), (36, 528355), (45, 422684), (60, 317013), (90, 211342), (180, 105671), (251, 75780), (421, 45180), (502, 37890), (753, 25260), (842, 22590), (1004, 18945), (1255, 15156), (1263, 15060), (1506, 12630), (1684, 11295), (2105, 9036), (2259, 8420), (2510, 7578), (2526, 7530), (3012, 6315), (3765, 5052), (3789, 5020), (4210, 4518)]