21054516

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{587}}^1$

素因数の和:669

約数の個数: 72

約数和(自身を含む): 58183776

約数和(自身を除く): 37129260

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 61, 84, 98, 122, 147, 183, 196, 244, 294, 366, 427, 587, 588, 732, 854, 1174, 1281, 1708, 1761, 2348, 2562, 2989, 3522, 4109, 5124, 5978, 7044, 8218, 8967, 11956, 12327, 16436, 17934, 24654, 28763, 35807, 35868, 49308, 57526, 71614, 86289, 107421, 115052, 143228, 172578, 214842, 250649, 345156, 429684, 501298, 751947, 1002596, 1503894, 1754543, 3007788, 3509086, 5263629, 7018172, 10527258, 21054516]

約数ペア:

[(1, 21054516), (2, 10527258), (3, 7018172), (4, 5263629), (6, 3509086), (7, 3007788), (12, 1754543), (14, 1503894), (21, 1002596), (28, 751947), (42, 501298), (49, 429684), (61, 345156), (84, 250649), (98, 214842), (122, 172578), (147, 143228), (183, 115052), (196, 107421), (244, 86289), (294, 71614), (366, 57526), (427, 49308), (587, 35868), (588, 35807), (732, 28763), (854, 24654), (1174, 17934), (1281, 16436), (1708, 12327), (1761, 11956), (2348, 8967), (2562, 8218), (2989, 7044), (3522, 5978), (4109, 5124)]