21467655

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1399}}^1$

素因数の和:1452

約数の個数: 48

約数和(自身を含む): 41932800

約数和(自身を除く): 20465145

約数列:

[1, 3, 5, 9, 11, 15, 31, 33, 45, 55, 93, 99, 155, 165, 279, 341, 465, 495, 1023, 1395, 1399, 1705, 3069, 4197, 5115, 6995, 12591, 15345, 15389, 20985, 43369, 46167, 62955, 76945, 130107, 138501, 216845, 230835, 390321, 477059, 650535, 692505, 1431177, 1951605, 2385295, 4293531, 7155885, 21467655]

約数ペア:

[(1, 21467655), (3, 7155885), (5, 4293531), (9, 2385295), (11, 1951605), (15, 1431177), (31, 692505), (33, 650535), (45, 477059), (55, 390321), (93, 230835), (99, 216845), (155, 138501), (165, 130107), (279, 76945), (341, 62955), (465, 46167), (495, 43369), (1023, 20985), (1395, 15389), (1399, 15345), (1705, 12591), (3069, 6995), (4197, 5115)]