19880840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1$

素因数の和:175

約数の個数: 128

約数和(自身を含む): 55814400

約数和(自身を除く): 35933560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 37, 38, 40, 56, 70, 74, 76, 95, 101, 133, 140, 148, 152, 185, 190, 202, 259, 266, 280, 296, 370, 380, 404, 505, 518, 532, 665, 703, 707, 740, 760, 808, 1010, 1036, 1064, 1295, 1330, 1406, 1414, 1480, 1919, 2020, 2072, 2590, 2660, 2812, 2828, 3515, 3535, 3737, 3838, 4040, 4921, 5180, 5320, 5624, 5656, 7030, 7070, 7474, 7676, 9595, 9842, 10360, 13433, 14060, 14140, 14948, 15352, 18685, 19190, 19684, 24605, 26159, 26866, 28120, 28280, 29896, 37370, 38380, 39368, 49210, 52318, 53732, 67165, 71003, 74740, 76760, 98420, 104636, 107464, 130795, 134330, 142006, 149480, 196840, 209272, 261590, 268660, 284012, 355015, 497021, 523180, 537320, 568024, 710030, 994042, 1046360, 1420060, 1988084, 2485105, 2840120, 3976168, 4970210, 9940420, 19880840]

約数ペア:

[(1, 19880840), (2, 9940420), (4, 4970210), (5, 3976168), (7, 2840120), (8, 2485105), (10, 1988084), (14, 1420060), (19, 1046360), (20, 994042), (28, 710030), (35, 568024), (37, 537320), (38, 523180), (40, 497021), (56, 355015), (70, 284012), (74, 268660), (76, 261590), (95, 209272), (101, 196840), (133, 149480), (140, 142006), (148, 134330), (152, 130795), (185, 107464), (190, 104636), (202, 98420), (259, 76760), (266, 74740), (280, 71003), (296, 67165), (370, 53732), (380, 52318), (404, 49210), (505, 39368), (518, 38380), (532, 37370), (665, 29896), (703, 28280), (707, 28120), (740, 26866), (760, 26159), (808, 24605), (1010, 19684), (1036, 19190), (1064, 18685), (1295, 15352), (1330, 14948), (1406, 14140), (1414, 14060), (1480, 13433), (1919, 10360), (2020, 9842), (2072, 9595), (2590, 7676), (2660, 7474), (2812, 7070), (2828, 7030), (3515, 5656), (3535, 5624), (3737, 5320), (3838, 5180), (4040, 4921)]