80640420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{1901}}^1$

素因数の和:2021

約数の個数: 96

約数和(自身を含む): 260741376

約数和(自身を除く): 180100956

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 101, 105, 140, 202, 210, 303, 404, 420, 505, 606, 707, 1010, 1212, 1414, 1515, 1901, 2020, 2121, 2828, 3030, 3535, 3802, 4242, 5703, 6060, 7070, 7604, 8484, 9505, 10605, 11406, 13307, 14140, 19010, 21210, 22812, 26614, 28515, 38020, 39921, 42420, 53228, 57030, 66535, 79842, 114060, 133070, 159684, 192001, 199605, 266140, 384002, 399210, 576003, 768004, 798420, 960005, 1152006, 1344007, 1920010, 2304012, 2688014, 2880015, 3840020, 4032021, 5376028, 5760030, 6720035, 8064042, 11520060, 13440070, 16128084, 20160105, 26880140, 40320210, 80640420]

約数ペア:

[(1, 80640420), (2, 40320210), (3, 26880140), (4, 20160105), (5, 16128084), (6, 13440070), (7, 11520060), (10, 8064042), (12, 6720035), (14, 5760030), (15, 5376028), (20, 4032021), (21, 3840020), (28, 2880015), (30, 2688014), (35, 2304012), (42, 1920010), (60, 1344007), (70, 1152006), (84, 960005), (101, 798420), (105, 768004), (140, 576003), (202, 399210), (210, 384002), (303, 266140), (404, 199605), (420, 192001), (505, 159684), (606, 133070), (707, 114060), (1010, 79842), (1212, 66535), (1414, 57030), (1515, 53228), (1901, 42420), (2020, 39921), (2121, 38020), (2828, 28515), (3030, 26614), (3535, 22812), (3802, 21210), (4242, 19010), (5703, 14140), (6060, 13307), (7070, 11406), (7604, 10605), (8484, 9505)]