21967876

素因数分解:

$2^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{347}}^1$

素因数の和:401

約数の個数: 72

約数和(自身を含む): 49986720

約数和(自身を除く): 28018844

約数列:

[1, 2, 4, 7, 14, 17, 19, 28, 34, 38, 49, 68, 76, 98, 119, 133, 196, 238, 266, 323, 347, 476, 532, 646, 694, 833, 931, 1292, 1388, 1666, 1862, 2261, 2429, 3332, 3724, 4522, 4858, 5899, 6593, 9044, 9716, 11798, 13186, 15827, 17003, 23596, 26372, 31654, 34006, 41293, 46151, 63308, 68012, 82586, 92302, 112081, 165172, 184604, 224162, 289051, 323057, 448324, 578102, 646114, 784567, 1156204, 1292228, 1569134, 3138268, 5491969, 10983938, 21967876]

約数ペア:

[(1, 21967876), (2, 10983938), (4, 5491969), (7, 3138268), (14, 1569134), (17, 1292228), (19, 1156204), (28, 784567), (34, 646114), (38, 578102), (49, 448324), (68, 323057), (76, 289051), (98, 224162), (119, 184604), (133, 165172), (196, 112081), (238, 92302), (266, 82586), (323, 68012), (347, 63308), (476, 46151), (532, 41293), (646, 34006), (694, 31654), (833, 26372), (931, 23596), (1292, 17003), (1388, 15827), (1666, 13186), (1862, 11798), (2261, 9716), (2429, 9044), (3332, 6593), (3724, 5899), (4522, 4858)]