20982240

素因数分解:

$2^5\times 3^4\times 5^1\times {\mathrm{1619}}^1$

素因数の和:1646

約数の個数: 120

約数和(自身を含む): 74095560

約数和(自身を除く): 53113320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 72, 80, 81, 90, 96, 108, 120, 135, 144, 160, 162, 180, 216, 240, 270, 288, 324, 360, 405, 432, 480, 540, 648, 720, 810, 864, 1080, 1296, 1440, 1619, 1620, 2160, 2592, 3238, 3240, 4320, 4857, 6476, 6480, 8095, 9714, 12952, 12960, 14571, 16190, 19428, 24285, 25904, 29142, 32380, 38856, 43713, 48570, 51808, 58284, 64760, 72855, 77712, 87426, 97140, 116568, 129520, 131139, 145710, 155424, 174852, 194280, 218565, 233136, 259040, 262278, 291420, 349704, 388560, 437130, 466272, 524556, 582840, 655695, 699408, 777120, 874260, 1049112, 1165680, 1311390, 1398816, 1748520, 2098224, 2331360, 2622780, 3497040, 4196448, 5245560, 6994080, 10491120, 20982240]

約数ペア:

[(1, 20982240), (2, 10491120), (3, 6994080), (4, 5245560), (5, 4196448), (6, 3497040), (8, 2622780), (9, 2331360), (10, 2098224), (12, 1748520), (15, 1398816), (16, 1311390), (18, 1165680), (20, 1049112), (24, 874260), (27, 777120), (30, 699408), (32, 655695), (36, 582840), (40, 524556), (45, 466272), (48, 437130), (54, 388560), (60, 349704), (72, 291420), (80, 262278), (81, 259040), (90, 233136), (96, 218565), (108, 194280), (120, 174852), (135, 155424), (144, 145710), (160, 131139), (162, 129520), (180, 116568), (216, 97140), (240, 87426), (270, 77712), (288, 72855), (324, 64760), (360, 58284), (405, 51808), (432, 48570), (480, 43713), (540, 38856), (648, 32380), (720, 29142), (810, 25904), (864, 24285), (1080, 19428), (1296, 16190), (1440, 14571), (1619, 12960), (1620, 12952), (2160, 9714), (2592, 8095), (3238, 6480), (3240, 6476), (4320, 4857)]