21313208

素因数分解:

$2^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{167}}^1$

素因数の和:276

約数の個数: 64

約数和(自身を含む): 47900160

約数和(自身を除く): 26586952

約数列:

[1, 2, 4, 7, 8, 14, 28, 43, 53, 56, 86, 106, 167, 172, 212, 301, 334, 344, 371, 424, 602, 668, 742, 1169, 1204, 1336, 1484, 2279, 2338, 2408, 2968, 4558, 4676, 7181, 8851, 9116, 9352, 14362, 15953, 17702, 18232, 28724, 31906, 35404, 50267, 57448, 61957, 63812, 70808, 100534, 123914, 127624, 201068, 247828, 380593, 402136, 495656, 761186, 1522372, 2664151, 3044744, 5328302, 10656604, 21313208]

約数ペア:

[(1, 21313208), (2, 10656604), (4, 5328302), (7, 3044744), (8, 2664151), (14, 1522372), (28, 761186), (43, 495656), (53, 402136), (56, 380593), (86, 247828), (106, 201068), (167, 127624), (172, 123914), (212, 100534), (301, 70808), (334, 63812), (344, 61957), (371, 57448), (424, 50267), (602, 35404), (668, 31906), (742, 28724), (1169, 18232), (1204, 17702), (1336, 15953), (1484, 14362), (2279, 9352), (2338, 9116), (2408, 8851), (2968, 7181), (4558, 4676)]