21288552

素因数分解:

$2^3\times 3^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{419}}^1$

素因数の和:530

約数の個数: 64

約数和(自身を含む): 55944000

約数和(自身を除く): 34655448

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 29, 58, 73, 87, 116, 146, 174, 219, 232, 292, 348, 419, 438, 584, 696, 838, 876, 1257, 1676, 1752, 2117, 2514, 3352, 4234, 5028, 6351, 8468, 10056, 12151, 12702, 16936, 24302, 25404, 30587, 36453, 48604, 50808, 61174, 72906, 91761, 97208, 122348, 145812, 183522, 244696, 291624, 367044, 734088, 887023, 1774046, 2661069, 3548092, 5322138, 7096184, 10644276, 21288552]

約数ペア:

[(1, 21288552), (2, 10644276), (3, 7096184), (4, 5322138), (6, 3548092), (8, 2661069), (12, 1774046), (24, 887023), (29, 734088), (58, 367044), (73, 291624), (87, 244696), (116, 183522), (146, 145812), (174, 122348), (219, 97208), (232, 91761), (292, 72906), (348, 61174), (419, 50808), (438, 48604), (584, 36453), (696, 30587), (838, 25404), (876, 24302), (1257, 16936), (1676, 12702), (1752, 12151), (2117, 10056), (2514, 8468), (3352, 6351), (4234, 5028)]