18921195

素因数分解:

$3^6\times 5^1\times {\mathrm{29}}^1\times {\mathrm{179}}^1$

素因数の和:231

約数の個数: 56

約数和(自身を含む): 35413200

約数和(自身を除く): 16492005

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 81, 87, 135, 145, 179, 243, 261, 405, 435, 537, 729, 783, 895, 1215, 1305, 1611, 2349, 2685, 3645, 3915, 4833, 5191, 7047, 8055, 11745, 14499, 15573, 21141, 24165, 25955, 35235, 43497, 46719, 72495, 77865, 105705, 130491, 140157, 217485, 233595, 420471, 652455, 700785, 1261413, 2102355, 3784239, 6307065, 18921195]

約数ペア:

[(1, 18921195), (3, 6307065), (5, 3784239), (9, 2102355), (15, 1261413), (27, 700785), (29, 652455), (45, 420471), (81, 233595), (87, 217485), (135, 140157), (145, 130491), (179, 105705), (243, 77865), (261, 72495), (405, 46719), (435, 43497), (537, 35235), (729, 25955), (783, 24165), (895, 21141), (1215, 15573), (1305, 14499), (1611, 11745), (2349, 8055), (2685, 7047), (3645, 5191), (3915, 4833)]