16621785

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{271}}^1$

素因数の和:358

約数の個数: 48

約数和(自身を含む): 30551040

約数和(自身を除く): 13929255

約数列:

[1, 3, 5, 9, 15, 29, 45, 47, 87, 141, 145, 235, 261, 271, 423, 435, 705, 813, 1305, 1355, 1363, 2115, 2439, 4065, 4089, 6815, 7859, 12195, 12267, 12737, 20445, 23577, 38211, 39295, 61335, 63685, 70731, 114633, 117885, 191055, 353655, 369373, 573165, 1108119, 1846865, 3324357, 5540595, 16621785]

約数ペア:

[(1, 16621785), (3, 5540595), (5, 3324357), (9, 1846865), (15, 1108119), (29, 573165), (45, 369373), (47, 353655), (87, 191055), (141, 117885), (145, 114633), (235, 70731), (261, 63685), (271, 61335), (423, 39295), (435, 38211), (705, 23577), (813, 20445), (1305, 12737), (1355, 12267), (1363, 12195), (2115, 7859), (2439, 6815), (4065, 4089)]