78131900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1$

素因数の和:244

約数の個数: 144

約数和(自身を含む): 215819520

約数和(自身を除く): 137687620

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 25, 28, 35, 44, 50, 55, 70, 73, 77, 100, 110, 139, 140, 146, 154, 175, 220, 275, 278, 292, 308, 350, 365, 385, 511, 550, 556, 695, 700, 730, 770, 803, 973, 1022, 1100, 1390, 1460, 1529, 1540, 1606, 1825, 1925, 1946, 2044, 2555, 2780, 3058, 3212, 3475, 3650, 3850, 3892, 4015, 4865, 5110, 5621, 6116, 6950, 7300, 7645, 7700, 8030, 9730, 10147, 10220, 10703, 11242, 12775, 13900, 15290, 16060, 19460, 20075, 20294, 21406, 22484, 24325, 25550, 28105, 30580, 38225, 40150, 40588, 42812, 48650, 50735, 51100, 53515, 56210, 71029, 76450, 80300, 97300, 101470, 107030, 111617, 112420, 140525, 142058, 152900, 202940, 214060, 223234, 253675, 267575, 281050, 284116, 355145, 446468, 507350, 535150, 558085, 562100, 710290, 781319, 1014700, 1070300, 1116170, 1420580, 1562638, 1775725, 2232340, 2790425, 3125276, 3551450, 3906595, 5580850, 7102900, 7813190, 11161700, 15626380, 19532975, 39065950, 78131900]

約数ペア:

[(1, 78131900), (2, 39065950), (4, 19532975), (5, 15626380), (7, 11161700), (10, 7813190), (11, 7102900), (14, 5580850), (20, 3906595), (22, 3551450), (25, 3125276), (28, 2790425), (35, 2232340), (44, 1775725), (50, 1562638), (55, 1420580), (70, 1116170), (73, 1070300), (77, 1014700), (100, 781319), (110, 710290), (139, 562100), (140, 558085), (146, 535150), (154, 507350), (175, 446468), (220, 355145), (275, 284116), (278, 281050), (292, 267575), (308, 253675), (350, 223234), (365, 214060), (385, 202940), (511, 152900), (550, 142058), (556, 140525), (695, 112420), (700, 111617), (730, 107030), (770, 101470), (803, 97300), (973, 80300), (1022, 76450), (1100, 71029), (1390, 56210), (1460, 53515), (1529, 51100), (1540, 50735), (1606, 48650), (1825, 42812), (1925, 40588), (1946, 40150), (2044, 38225), (2555, 30580), (2780, 28105), (3058, 25550), (3212, 24325), (3475, 22484), (3650, 21406), (3850, 20294), (3892, 20075), (4015, 19460), (4865, 16060), (5110, 15290), (5621, 13900), (6116, 12775), (6950, 11242), (7300, 10703), (7645, 10220), (7700, 10147), (8030, 9730)]