20305558

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1$

素因数の和:173

約数の個数: 64

約数和(自身を含む): 39997440

約数和(自身を除く): 19691882

約数列:

[1, 2, 7, 13, 14, 26, 31, 59, 61, 62, 91, 118, 122, 182, 217, 403, 413, 427, 434, 767, 793, 806, 826, 854, 1534, 1586, 1829, 1891, 2821, 3599, 3658, 3782, 5369, 5551, 5642, 7198, 10738, 11102, 12803, 13237, 23777, 24583, 25193, 25606, 26474, 46787, 47554, 49166, 50386, 93574, 111569, 166439, 172081, 223138, 327509, 332878, 344162, 655018, 780983, 1450397, 1561966, 2900794, 10152779, 20305558]

約数ペア:

[(1, 20305558), (2, 10152779), (7, 2900794), (13, 1561966), (14, 1450397), (26, 780983), (31, 655018), (59, 344162), (61, 332878), (62, 327509), (91, 223138), (118, 172081), (122, 166439), (182, 111569), (217, 93574), (403, 50386), (413, 49166), (427, 47554), (434, 46787), (767, 26474), (793, 25606), (806, 25193), (826, 24583), (854, 23777), (1534, 13237), (1586, 12803), (1829, 11102), (1891, 10738), (2821, 7198), (3599, 5642), (3658, 5551), (3782, 5369)]