19848660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{25447}}^1$

素因数の和:25472

約数の個数: 48

約数和(自身を含む): 59853696

約数和(自身を除く): 40005036

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 25447, 50894, 76341, 101788, 127235, 152682, 254470, 305364, 330811, 381705, 508940, 661622, 763410, 992433, 1323244, 1526820, 1654055, 1984866, 3308110, 3969732, 4962165, 6616220, 9924330, 19848660]

約数ペア:

[(1, 19848660), (2, 9924330), (3, 6616220), (4, 4962165), (5, 3969732), (6, 3308110), (10, 1984866), (12, 1654055), (13, 1526820), (15, 1323244), (20, 992433), (26, 763410), (30, 661622), (39, 508940), (52, 381705), (60, 330811), (65, 305364), (78, 254470), (130, 152682), (156, 127235), (195, 101788), (260, 76341), (390, 50894), (780, 25447)]