19812240

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{3931}}^1$

素因数の和:3957

約数の個数: 120

約数和(自身を含む): 76060608

約数和(自身を除く): 56248368

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 336, 360, 420, 504, 560, 630, 720, 840, 1008, 1260, 1680, 2520, 3931, 5040, 7862, 11793, 15724, 19655, 23586, 27517, 31448, 35379, 39310, 47172, 55034, 58965, 62896, 70758, 78620, 82551, 94344, 110068, 117930, 137585, 141516, 157240, 165102, 176895, 188688, 220136, 235860, 247653, 275170, 283032, 314480, 330204, 353790, 412755, 440272, 471720, 495306, 550340, 566064, 660408, 707580, 825510, 943440, 990612, 1100680, 1238265, 1320816, 1415160, 1651020, 1981224, 2201360, 2476530, 2830320, 3302040, 3962448, 4953060, 6604080, 9906120, 19812240]

約数ペア:

[(1, 19812240), (2, 9906120), (3, 6604080), (4, 4953060), (5, 3962448), (6, 3302040), (7, 2830320), (8, 2476530), (9, 2201360), (10, 1981224), (12, 1651020), (14, 1415160), (15, 1320816), (16, 1238265), (18, 1100680), (20, 990612), (21, 943440), (24, 825510), (28, 707580), (30, 660408), (35, 566064), (36, 550340), (40, 495306), (42, 471720), (45, 440272), (48, 412755), (56, 353790), (60, 330204), (63, 314480), (70, 283032), (72, 275170), (80, 247653), (84, 235860), (90, 220136), (105, 188688), (112, 176895), (120, 165102), (126, 157240), (140, 141516), (144, 137585), (168, 117930), (180, 110068), (210, 94344), (240, 82551), (252, 78620), (280, 70758), (315, 62896), (336, 58965), (360, 55034), (420, 47172), (504, 39310), (560, 35379), (630, 31448), (720, 27517), (840, 23586), (1008, 19655), (1260, 15724), (1680, 11793), (2520, 7862), (3931, 5040)]