20588680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^2\times {\mathrm{139}}^1$

素因数の和:203

約数の個数: 96

約数和(自身を含む): 55742400

約数和(自身を除く): 35153720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 139, 140, 161, 184, 230, 278, 280, 322, 460, 529, 556, 644, 695, 805, 920, 973, 1058, 1112, 1288, 1390, 1610, 1946, 2116, 2645, 2780, 3197, 3220, 3703, 3892, 4232, 4865, 5290, 5560, 6394, 6440, 7406, 7784, 9730, 10580, 12788, 14812, 15985, 18515, 19460, 21160, 22379, 25576, 29624, 31970, 37030, 38920, 44758, 63940, 73531, 74060, 89516, 111895, 127880, 147062, 148120, 179032, 223790, 294124, 367655, 447580, 514717, 588248, 735310, 895160, 1029434, 1470620, 2058868, 2573585, 2941240, 4117736, 5147170, 10294340, 20588680]

約数ペア:

[(1, 20588680), (2, 10294340), (4, 5147170), (5, 4117736), (7, 2941240), (8, 2573585), (10, 2058868), (14, 1470620), (20, 1029434), (23, 895160), (28, 735310), (35, 588248), (40, 514717), (46, 447580), (56, 367655), (70, 294124), (92, 223790), (115, 179032), (139, 148120), (140, 147062), (161, 127880), (184, 111895), (230, 89516), (278, 74060), (280, 73531), (322, 63940), (460, 44758), (529, 38920), (556, 37030), (644, 31970), (695, 29624), (805, 25576), (920, 22379), (973, 21160), (1058, 19460), (1112, 18515), (1288, 15985), (1390, 14812), (1610, 12788), (1946, 10580), (2116, 9730), (2645, 7784), (2780, 7406), (3197, 6440), (3220, 6394), (3703, 5560), (3892, 5290), (4232, 4865)]