21490897905

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{968713}}^1$

素因数の和:968770

約数の個数: 48

約数和(自身を含む): 40802233680

約数和(自身を除く): 19311335775

約数列:

[1, 3, 5, 9, 15, 17, 29, 45, 51, 85, 87, 145, 153, 255, 261, 435, 493, 765, 1305, 1479, 2465, 4437, 7395, 22185, 968713, 2906139, 4843565, 8718417, 14530695, 16468121, 28092677, 43592085, 49404363, 82340605, 84278031, 140463385, 148213089, 247021815, 252834093, 421390155, 477575509, 741065445, 1264170465, 1432726527, 2387877545, 4298179581, 7163632635, 21490897905]

約数ペア:

[(1, 21490897905), (3, 7163632635), (5, 4298179581), (9, 2387877545), (15, 1432726527), (17, 1264170465), (29, 741065445), (45, 477575509), (51, 421390155), (85, 252834093), (87, 247021815), (145, 148213089), (153, 140463385), (255, 84278031), (261, 82340605), (435, 49404363), (493, 43592085), (765, 28092677), (1305, 16468121), (1479, 14530695), (2465, 8718417), (4437, 4843565), (7395, 2906139), (22185, 968713)]