18723705

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:111

約数の個数: 128

約数和(自身を含む): 42577920

約数和(自身を除く): 23854215

約数列:

[1, 3, 5, 7, 11, 13, 15, 21, 29, 33, 35, 39, 43, 55, 65, 77, 87, 91, 105, 129, 143, 145, 165, 195, 203, 215, 231, 273, 301, 319, 377, 385, 429, 435, 455, 473, 559, 609, 645, 715, 903, 957, 1001, 1015, 1131, 1155, 1247, 1365, 1419, 1505, 1595, 1677, 1885, 2145, 2233, 2365, 2639, 2795, 3003, 3045, 3311, 3741, 3913, 4147, 4515, 4785, 5005, 5655, 6149, 6235, 6699, 7095, 7917, 8385, 8729, 9933, 11165, 11739, 12441, 13195, 13717, 15015, 16211, 16555, 18447, 18705, 19565, 20735, 26187, 29029, 30745, 33495, 39585, 41151, 43043, 43645, 48633, 49665, 58695, 62205, 68585, 81055, 87087, 92235, 96019, 113477, 129129, 130935, 145145, 178321, 205755, 215215, 243165, 288057, 340431, 435435, 480095, 534963, 567385, 645645, 891605, 1248247, 1440285, 1702155, 2674815, 3744741, 6241235, 18723705]

約数ペア:

[(1, 18723705), (3, 6241235), (5, 3744741), (7, 2674815), (11, 1702155), (13, 1440285), (15, 1248247), (21, 891605), (29, 645645), (33, 567385), (35, 534963), (39, 480095), (43, 435435), (55, 340431), (65, 288057), (77, 243165), (87, 215215), (91, 205755), (105, 178321), (129, 145145), (143, 130935), (145, 129129), (165, 113477), (195, 96019), (203, 92235), (215, 87087), (231, 81055), (273, 68585), (301, 62205), (319, 58695), (377, 49665), (385, 48633), (429, 43645), (435, 43043), (455, 41151), (473, 39585), (559, 33495), (609, 30745), (645, 29029), (715, 26187), (903, 20735), (957, 19565), (1001, 18705), (1015, 18447), (1131, 16555), (1155, 16211), (1247, 15015), (1365, 13717), (1419, 13195), (1505, 12441), (1595, 11739), (1677, 11165), (1885, 9933), (2145, 8729), (2233, 8385), (2365, 7917), (2639, 7095), (2795, 6699), (3003, 6235), (3045, 6149), (3311, 5655), (3741, 5005), (3913, 4785), (4147, 4515)]