21077055

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{521}}^1$

素因数の和:592

約数の個数: 48

約数和(自身を含む): 39087360

約数和(自身を除く): 18010305

約数列:

[1, 3, 5, 9, 15, 29, 31, 45, 87, 93, 145, 155, 261, 279, 435, 465, 521, 899, 1305, 1395, 1563, 2605, 2697, 4495, 4689, 7815, 8091, 13485, 15109, 16151, 23445, 40455, 45327, 48453, 75545, 80755, 135981, 145359, 226635, 242265, 468379, 679905, 726795, 1405137, 2341895, 4215411, 7025685, 21077055]

約数ペア:

[(1, 21077055), (3, 7025685), (5, 4215411), (9, 2341895), (15, 1405137), (29, 726795), (31, 679905), (45, 468379), (87, 242265), (93, 226635), (145, 145359), (155, 135981), (261, 80755), (279, 75545), (435, 48453), (465, 45327), (521, 40455), (899, 23445), (1305, 16151), (1395, 15109), (1563, 13485), (2605, 8091), (2697, 7815), (4495, 4689)]