20356560

素因数分解:

$2^4\times 3^2\times 5^1\times 7^2\times {\mathrm{577}}^1$

素因数の和:610

約数の個数: 180

約数和(自身を含む): 79663428

約数和(自身を除く): 59306868

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, 49, 56, 60, 63, 70, 72, 80, 84, 90, 98, 105, 112, 120, 126, 140, 144, 147, 168, 180, 196, 210, 240, 245, 252, 280, 294, 315, 336, 360, 392, 420, 441, 490, 504, 560, 577, 588, 630, 720, 735, 784, 840, 882, 980, 1008, 1154, 1176, 1260, 1470, 1680, 1731, 1764, 1960, 2205, 2308, 2352, 2520, 2885, 2940, 3462, 3528, 3920, 4039, 4410, 4616, 5040, 5193, 5770, 5880, 6924, 7056, 8078, 8655, 8820, 9232, 10386, 11540, 11760, 12117, 13848, 16156, 17310, 17640, 20195, 20772, 23080, 24234, 25965, 27696, 28273, 32312, 34620, 35280, 36351, 40390, 41544, 46160, 48468, 51930, 56546, 60585, 64624, 69240, 72702, 80780, 83088, 84819, 96936, 103860, 113092, 121170, 138480, 141365, 145404, 161560, 169638, 181755, 193872, 207720, 226184, 242340, 254457, 282730, 290808, 323120, 339276, 363510, 415440, 424095, 452368, 484680, 508914, 565460, 581616, 678552, 727020, 848190, 969360, 1017828, 1130920, 1272285, 1357104, 1454040, 1696380, 2035656, 2261840, 2544570, 2908080, 3392760, 4071312, 5089140, 6785520, 10178280, 20356560]

約数ペア:

[(1, 20356560), (2, 10178280), (3, 6785520), (4, 5089140), (5, 4071312), (6, 3392760), (7, 2908080), (8, 2544570), (9, 2261840), (10, 2035656), (12, 1696380), (14, 1454040), (15, 1357104), (16, 1272285), (18, 1130920), (20, 1017828), (21, 969360), (24, 848190), (28, 727020), (30, 678552), (35, 581616), (36, 565460), (40, 508914), (42, 484680), (45, 452368), (48, 424095), (49, 415440), (56, 363510), (60, 339276), (63, 323120), (70, 290808), (72, 282730), (80, 254457), (84, 242340), (90, 226184), (98, 207720), (105, 193872), (112, 181755), (120, 169638), (126, 161560), (140, 145404), (144, 141365), (147, 138480), (168, 121170), (180, 113092), (196, 103860), (210, 96936), (240, 84819), (245, 83088), (252, 80780), (280, 72702), (294, 69240), (315, 64624), (336, 60585), (360, 56546), (392, 51930), (420, 48468), (441, 46160), (490, 41544), (504, 40390), (560, 36351), (577, 35280), (588, 34620), (630, 32312), (720, 28273), (735, 27696), (784, 25965), (840, 24234), (882, 23080), (980, 20772), (1008, 20195), (1154, 17640), (1176, 17310), (1260, 16156), (1470, 13848), (1680, 12117), (1731, 11760), (1764, 11540), (1960, 10386), (2205, 9232), (2308, 8820), (2352, 8655), (2520, 8078), (2885, 7056), (2940, 6924), (3462, 5880), (3528, 5770), (3920, 5193), (4039, 5040), (4410, 4616)]