20400840

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{929}}^1$

素因数の和:1007

約数の個数: 96

約数和(自身を含む): 67462200

約数和(自身を除く): 47061360

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 61, 72, 90, 120, 122, 180, 183, 244, 305, 360, 366, 488, 549, 610, 732, 915, 929, 1098, 1220, 1464, 1830, 1858, 2196, 2440, 2745, 2787, 3660, 3716, 4392, 4645, 5490, 5574, 7320, 7432, 8361, 9290, 10980, 11148, 13935, 16722, 18580, 21960, 22296, 27870, 33444, 37160, 41805, 55740, 56669, 66888, 83610, 111480, 113338, 167220, 170007, 226676, 283345, 334440, 340014, 453352, 510021, 566690, 680028, 850035, 1020042, 1133380, 1360056, 1700070, 2040084, 2266760, 2550105, 3400140, 4080168, 5100210, 6800280, 10200420, 20400840]

約数ペア:

[(1, 20400840), (2, 10200420), (3, 6800280), (4, 5100210), (5, 4080168), (6, 3400140), (8, 2550105), (9, 2266760), (10, 2040084), (12, 1700070), (15, 1360056), (18, 1133380), (20, 1020042), (24, 850035), (30, 680028), (36, 566690), (40, 510021), (45, 453352), (60, 340014), (61, 334440), (72, 283345), (90, 226676), (120, 170007), (122, 167220), (180, 113338), (183, 111480), (244, 83610), (305, 66888), (360, 56669), (366, 55740), (488, 41805), (549, 37160), (610, 33444), (732, 27870), (915, 22296), (929, 21960), (1098, 18580), (1220, 16722), (1464, 13935), (1830, 11148), (1858, 10980), (2196, 9290), (2440, 8361), (2745, 7432), (2787, 7320), (3660, 5574), (3716, 5490), (4392, 4645)]