20780448

素因数分解:

$2^5\times 3^1\times {\mathrm{13}}^1\times {\mathrm{16651}}^1$

素因数の和:16677

約数の個数: 48

約数和(自身を含む): 58748256

約数和(自身を除く): 37967808

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 32, 39, 48, 52, 78, 96, 104, 156, 208, 312, 416, 624, 1248, 16651, 33302, 49953, 66604, 99906, 133208, 199812, 216463, 266416, 399624, 432926, 532832, 649389, 799248, 865852, 1298778, 1598496, 1731704, 2597556, 3463408, 5195112, 6926816, 10390224, 20780448]

約数ペア:

[(1, 20780448), (2, 10390224), (3, 6926816), (4, 5195112), (6, 3463408), (8, 2597556), (12, 1731704), (13, 1598496), (16, 1298778), (24, 865852), (26, 799248), (32, 649389), (39, 532832), (48, 432926), (52, 399624), (78, 266416), (96, 216463), (104, 199812), (156, 133208), (208, 99906), (312, 66604), (416, 49953), (624, 33302), (1248, 16651)]