21148569

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{271}}^1$

素因数の和:342

約数の個数: 48

約数和(自身を含む): 35642880

約数和(自身を除く): 14494311

約数列:

[1, 3, 9, 13, 23, 29, 39, 69, 87, 117, 207, 261, 271, 299, 377, 667, 813, 897, 1131, 2001, 2439, 2691, 3393, 3523, 6003, 6233, 7859, 8671, 10569, 18699, 23577, 26013, 31707, 56097, 70731, 78039, 81029, 102167, 180757, 243087, 306501, 542271, 729261, 919503, 1626813, 2349841, 7049523, 21148569]

約数ペア:

[(1, 21148569), (3, 7049523), (9, 2349841), (13, 1626813), (23, 919503), (29, 729261), (39, 542271), (69, 306501), (87, 243087), (117, 180757), (207, 102167), (261, 81029), (271, 78039), (299, 70731), (377, 56097), (667, 31707), (813, 26013), (897, 23577), (1131, 18699), (2001, 10569), (2439, 8671), (2691, 7859), (3393, 6233), (3523, 6003)]