21076965

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5147}}^1$

素因数の和:5178

約数の個数: 48

約数和(自身を含む): 44972928

約数和(自身を除く): 23895963

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 35, 39, 45, 63, 65, 91, 105, 117, 195, 273, 315, 455, 585, 819, 1365, 4095, 5147, 15441, 25735, 36029, 46323, 66911, 77205, 108087, 180145, 200733, 231615, 324261, 334555, 468377, 540435, 602199, 1003665, 1405131, 1621305, 2341885, 3010995, 4215393, 7025655, 21076965]

約数ペア:

[(1, 21076965), (3, 7025655), (5, 4215393), (7, 3010995), (9, 2341885), (13, 1621305), (15, 1405131), (21, 1003665), (35, 602199), (39, 540435), (45, 468377), (63, 334555), (65, 324261), (91, 231615), (105, 200733), (117, 180145), (195, 108087), (273, 77205), (315, 66911), (455, 46323), (585, 36029), (819, 25735), (1365, 15441), (4095, 5147)]