21140912

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1$

素因数の和:166

約数の個数: 80

約数和(自身を含む): 47101152

約数和(自身を除く): 25960240

約数列:

[1, 2, 4, 8, 13, 16, 26, 37, 41, 52, 67, 74, 82, 104, 134, 148, 164, 208, 268, 296, 328, 481, 533, 536, 592, 656, 871, 962, 1066, 1072, 1517, 1742, 1924, 2132, 2479, 2747, 3034, 3484, 3848, 4264, 4958, 5494, 6068, 6968, 7696, 8528, 9916, 10988, 12136, 13936, 19721, 19832, 21976, 24272, 32227, 35711, 39442, 39664, 43952, 64454, 71422, 78884, 101639, 128908, 142844, 157768, 203278, 257816, 285688, 315536, 406556, 515632, 571376, 813112, 1321307, 1626224, 2642614, 5285228, 10570456, 21140912]

約数ペア:

[(1, 21140912), (2, 10570456), (4, 5285228), (8, 2642614), (13, 1626224), (16, 1321307), (26, 813112), (37, 571376), (41, 515632), (52, 406556), (67, 315536), (74, 285688), (82, 257816), (104, 203278), (134, 157768), (148, 142844), (164, 128908), (208, 101639), (268, 78884), (296, 71422), (328, 64454), (481, 43952), (533, 39664), (536, 39442), (592, 35711), (656, 32227), (871, 24272), (962, 21976), (1066, 19832), (1072, 19721), (1517, 13936), (1742, 12136), (1924, 10988), (2132, 9916), (2479, 8528), (2747, 7696), (3034, 6968), (3484, 6068), (3848, 5494), (4264, 4958)]