21767265

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1$

素因数の和:263

約数の個数: 64

約数和(自身を含む): 42470400

約数和(自身を除く): 20703135

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 79, 117, 135, 157, 195, 237, 351, 395, 471, 585, 711, 785, 1027, 1185, 1413, 1755, 2041, 2133, 2355, 3081, 3555, 4239, 5135, 6123, 7065, 9243, 10205, 10665, 12403, 15405, 18369, 21195, 27729, 30615, 37209, 46215, 55107, 62015, 91845, 111627, 138645, 161239, 186045, 275535, 334881, 483717, 558135, 806195, 1451151, 1674405, 2418585, 4353453, 7255755, 21767265]

約数ペア:

[(1, 21767265), (3, 7255755), (5, 4353453), (9, 2418585), (13, 1674405), (15, 1451151), (27, 806195), (39, 558135), (45, 483717), (65, 334881), (79, 275535), (117, 186045), (135, 161239), (157, 138645), (195, 111627), (237, 91845), (351, 62015), (395, 55107), (471, 46215), (585, 37209), (711, 30615), (785, 27729), (1027, 21195), (1185, 18369), (1413, 15405), (1755, 12403), (2041, 10665), (2133, 10205), (2355, 9243), (3081, 7065), (3555, 6123), (4239, 5135)]