21173488

素因数分解:

$2^4\times 7^2\times {\mathrm{113}}^1\times {\mathrm{239}}^1$

素因数の和:374

約数の個数: 60

約数和(自身を含む): 48345120

約数和(自身を除く): 27171632

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 113, 196, 226, 239, 392, 452, 478, 784, 791, 904, 956, 1582, 1673, 1808, 1912, 3164, 3346, 3824, 5537, 6328, 6692, 11074, 11711, 12656, 13384, 22148, 23422, 26768, 27007, 44296, 46844, 54014, 88592, 93688, 108028, 187376, 189049, 216056, 378098, 432112, 756196, 1323343, 1512392, 2646686, 3024784, 5293372, 10586744, 21173488]

約数ペア:

[(1, 21173488), (2, 10586744), (4, 5293372), (7, 3024784), (8, 2646686), (14, 1512392), (16, 1323343), (28, 756196), (49, 432112), (56, 378098), (98, 216056), (112, 189049), (113, 187376), (196, 108028), (226, 93688), (239, 88592), (392, 54014), (452, 46844), (478, 44296), (784, 27007), (791, 26768), (904, 23422), (956, 22148), (1582, 13384), (1673, 12656), (1808, 11711), (1912, 11074), (3164, 6692), (3346, 6328), (3824, 5537)]