20779695

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1181}}^1$

素因数の和:1232

約数の個数: 48

約数和(自身を含む): 39828672

約数和(自身を除く): 19048977

約数列:

[1, 3, 5, 9, 15, 17, 23, 45, 51, 69, 85, 115, 153, 207, 255, 345, 391, 765, 1035, 1173, 1181, 1955, 3519, 3543, 5865, 5905, 10629, 17595, 17715, 20077, 27163, 53145, 60231, 81489, 100385, 135815, 180693, 244467, 301155, 407445, 461771, 903465, 1222335, 1385313, 2308855, 4155939, 6926565, 20779695]

約数ペア:

[(1, 20779695), (3, 6926565), (5, 4155939), (9, 2308855), (15, 1385313), (17, 1222335), (23, 903465), (45, 461771), (51, 407445), (69, 301155), (85, 244467), (115, 180693), (153, 135815), (207, 100385), (255, 81489), (345, 60231), (391, 53145), (765, 27163), (1035, 20077), (1173, 17715), (1181, 17595), (1955, 10629), (3519, 5905), (3543, 5865)]