19746540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{9973}}^1$

素因数の和:9999

約数の個数: 72

約数和(自身を含む): 65349648

約数和(自身を除く): 45603108

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 9973, 19946, 29919, 39892, 49865, 59838, 89757, 99730, 109703, 119676, 149595, 179514, 199460, 219406, 299190, 329109, 359028, 438812, 448785, 548515, 598380, 658218, 897570, 987327, 1097030, 1316436, 1645545, 1795140, 1974654, 2194060, 3291090, 3949308, 4936635, 6582180, 9873270, 19746540]

約数ペア:

[(1, 19746540), (2, 9873270), (3, 6582180), (4, 4936635), (5, 3949308), (6, 3291090), (9, 2194060), (10, 1974654), (11, 1795140), (12, 1645545), (15, 1316436), (18, 1097030), (20, 987327), (22, 897570), (30, 658218), (33, 598380), (36, 548515), (44, 448785), (45, 438812), (55, 359028), (60, 329109), (66, 299190), (90, 219406), (99, 199460), (110, 179514), (132, 149595), (165, 119676), (180, 109703), (198, 99730), (220, 89757), (330, 59838), (396, 49865), (495, 39892), (660, 29919), (990, 19946), (1980, 9973)]