19853680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{293}}^1$

素因数の和:335

約数の個数: 120

約数和(自身を含む): 58183776

約数和(自身を除く): 38330096

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 121, 140, 154, 176, 220, 242, 280, 293, 308, 385, 440, 484, 560, 586, 605, 616, 770, 847, 880, 968, 1172, 1210, 1232, 1465, 1540, 1694, 1936, 2051, 2344, 2420, 2930, 3080, 3223, 3388, 4102, 4235, 4688, 4840, 5860, 6160, 6446, 6776, 8204, 8470, 9680, 10255, 11720, 12892, 13552, 16115, 16408, 16940, 20510, 22561, 23440, 25784, 32230, 32816, 33880, 35453, 41020, 45122, 51568, 64460, 67760, 70906, 82040, 90244, 112805, 128920, 141812, 164080, 177265, 180488, 225610, 248171, 257840, 283624, 354530, 360976, 451220, 496342, 567248, 709060, 902440, 992684, 1240855, 1418120, 1804880, 1985368, 2481710, 2836240, 3970736, 4963420, 9926840, 19853680]

約数ペア:

[(1, 19853680), (2, 9926840), (4, 4963420), (5, 3970736), (7, 2836240), (8, 2481710), (10, 1985368), (11, 1804880), (14, 1418120), (16, 1240855), (20, 992684), (22, 902440), (28, 709060), (35, 567248), (40, 496342), (44, 451220), (55, 360976), (56, 354530), (70, 283624), (77, 257840), (80, 248171), (88, 225610), (110, 180488), (112, 177265), (121, 164080), (140, 141812), (154, 128920), (176, 112805), (220, 90244), (242, 82040), (280, 70906), (293, 67760), (308, 64460), (385, 51568), (440, 45122), (484, 41020), (560, 35453), (586, 33880), (605, 32816), (616, 32230), (770, 25784), (847, 23440), (880, 22561), (968, 20510), (1172, 16940), (1210, 16408), (1232, 16115), (1465, 13552), (1540, 12892), (1694, 11720), (1936, 10255), (2051, 9680), (2344, 8470), (2420, 8204), (2930, 6776), (3080, 6446), (3223, 6160), (3388, 5860), (4102, 4840), (4235, 4688)]