20406256

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{199}}^1$

素因数の和:266

約数の個数: 80

約数和(自身を含む): 46872000

約数和(自身を除く): 26465744

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 29, 34, 52, 58, 68, 104, 116, 136, 199, 208, 221, 232, 272, 377, 398, 442, 464, 493, 754, 796, 884, 986, 1508, 1592, 1768, 1972, 2587, 3016, 3184, 3383, 3536, 3944, 5174, 5771, 6032, 6409, 6766, 7888, 10348, 11542, 12818, 13532, 20696, 23084, 25636, 27064, 41392, 43979, 46168, 51272, 54128, 75023, 87958, 92336, 98107, 102544, 150046, 175916, 196214, 300092, 351832, 392428, 600184, 703664, 784856, 1200368, 1275391, 1569712, 2550782, 5101564, 10203128, 20406256]

約数ペア:

[(1, 20406256), (2, 10203128), (4, 5101564), (8, 2550782), (13, 1569712), (16, 1275391), (17, 1200368), (26, 784856), (29, 703664), (34, 600184), (52, 392428), (58, 351832), (68, 300092), (104, 196214), (116, 175916), (136, 150046), (199, 102544), (208, 98107), (221, 92336), (232, 87958), (272, 75023), (377, 54128), (398, 51272), (442, 46168), (464, 43979), (493, 41392), (754, 27064), (796, 25636), (884, 23084), (986, 20696), (1508, 13532), (1592, 12818), (1768, 11542), (1972, 10348), (2587, 7888), (3016, 6766), (3184, 6409), (3383, 6032), (3536, 5771), (3944, 5174)]