20775804

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{397}}^1$

素因数の和:507

約数の個数: 72

約数和(自身を含む): 57168720

約数和(自身を除く): 36392916

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 89, 98, 147, 178, 196, 267, 294, 356, 397, 534, 588, 623, 794, 1068, 1191, 1246, 1588, 1869, 2382, 2492, 2779, 3738, 4361, 4764, 5558, 7476, 8337, 8722, 11116, 13083, 16674, 17444, 19453, 26166, 33348, 35333, 38906, 52332, 58359, 70666, 77812, 105999, 116718, 141332, 211998, 233436, 247331, 423996, 494662, 741993, 989324, 1483986, 1731317, 2967972, 3462634, 5193951, 6925268, 10387902, 20775804]

約数ペア:

[(1, 20775804), (2, 10387902), (3, 6925268), (4, 5193951), (6, 3462634), (7, 2967972), (12, 1731317), (14, 1483986), (21, 989324), (28, 741993), (42, 494662), (49, 423996), (84, 247331), (89, 233436), (98, 211998), (147, 141332), (178, 116718), (196, 105999), (267, 77812), (294, 70666), (356, 58359), (397, 52332), (534, 38906), (588, 35333), (623, 33348), (794, 26166), (1068, 19453), (1191, 17444), (1246, 16674), (1588, 13083), (1869, 11116), (2382, 8722), (2492, 8337), (2779, 7476), (3738, 5558), (4361, 4764)]