19440945

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{197}}^1$

素因数の和:271

約数の個数: 64

約数和(自身を含む): 37635840

約数和(自身を除く): 18194895

約数列:

[1, 3, 5, 9, 15, 17, 27, 43, 45, 51, 85, 129, 135, 153, 197, 215, 255, 387, 459, 591, 645, 731, 765, 985, 1161, 1773, 1935, 2193, 2295, 2955, 3349, 3655, 5319, 5805, 6579, 8471, 8865, 10047, 10965, 16745, 19737, 25413, 26595, 30141, 32895, 42355, 50235, 76239, 90423, 98685, 127065, 144007, 150705, 228717, 381195, 432021, 452115, 720035, 1143585, 1296063, 2160105, 3888189, 6480315, 19440945]

約数ペア:

[(1, 19440945), (3, 6480315), (5, 3888189), (9, 2160105), (15, 1296063), (17, 1143585), (27, 720035), (43, 452115), (45, 432021), (51, 381195), (85, 228717), (129, 150705), (135, 144007), (153, 127065), (197, 98685), (215, 90423), (255, 76239), (387, 50235), (459, 42355), (591, 32895), (645, 30141), (731, 26595), (765, 25413), (985, 19737), (1161, 16745), (1773, 10965), (1935, 10047), (2193, 8865), (2295, 8471), (2955, 6579), (3349, 5805), (3655, 5319)]