25816815

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{271}}^1$

素因数の和:384

約数の個数: 48

約数和(自身を含む): 47099520

約数和(自身を除く): 21282705

約数列:

[1, 3, 5, 9, 15, 29, 45, 73, 87, 145, 219, 261, 271, 365, 435, 657, 813, 1095, 1305, 1355, 2117, 2439, 3285, 4065, 6351, 7859, 10585, 12195, 19053, 19783, 23577, 31755, 39295, 59349, 70731, 95265, 98915, 117885, 178047, 296745, 353655, 573707, 890235, 1721121, 2868535, 5163363, 8605605, 25816815]

約数ペア:

[(1, 25816815), (3, 8605605), (5, 5163363), (9, 2868535), (15, 1721121), (29, 890235), (45, 573707), (73, 353655), (87, 296745), (145, 178047), (219, 117885), (261, 98915), (271, 95265), (365, 70731), (435, 59349), (657, 39295), (813, 31755), (1095, 23577), (1305, 19783), (1355, 19053), (2117, 12195), (2439, 10585), (3285, 7859), (4065, 6351)]