20407968

素因数分解:

$2^5\times 3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{191}}^1$

素因数の和:267

約数の個数: 144

約数和(自身を含む): 67931136

約数和(自身を除く): 47523168

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 32, 36, 42, 48, 53, 56, 63, 72, 84, 96, 106, 112, 126, 144, 159, 168, 191, 212, 224, 252, 288, 318, 336, 371, 382, 424, 477, 504, 573, 636, 672, 742, 764, 848, 954, 1008, 1113, 1146, 1272, 1337, 1484, 1528, 1696, 1719, 1908, 2016, 2226, 2292, 2544, 2674, 2968, 3056, 3339, 3438, 3816, 4011, 4452, 4584, 5088, 5348, 5936, 6112, 6678, 6876, 7632, 8022, 8904, 9168, 10123, 10696, 11872, 12033, 13356, 13752, 15264, 16044, 17808, 18336, 20246, 21392, 24066, 26712, 27504, 30369, 32088, 35616, 40492, 42784, 48132, 53424, 55008, 60738, 64176, 70861, 80984, 91107, 96264, 106848, 121476, 128352, 141722, 161968, 182214, 192528, 212583, 242952, 283444, 323936, 364428, 385056, 425166, 485904, 566888, 637749, 728856, 850332, 971808, 1133776, 1275498, 1457712, 1700664, 2267552, 2550996, 2915424, 3401328, 5101992, 6802656, 10203984, 20407968]

約数ペア:

[(1, 20407968), (2, 10203984), (3, 6802656), (4, 5101992), (6, 3401328), (7, 2915424), (8, 2550996), (9, 2267552), (12, 1700664), (14, 1457712), (16, 1275498), (18, 1133776), (21, 971808), (24, 850332), (28, 728856), (32, 637749), (36, 566888), (42, 485904), (48, 425166), (53, 385056), (56, 364428), (63, 323936), (72, 283444), (84, 242952), (96, 212583), (106, 192528), (112, 182214), (126, 161968), (144, 141722), (159, 128352), (168, 121476), (191, 106848), (212, 96264), (224, 91107), (252, 80984), (288, 70861), (318, 64176), (336, 60738), (371, 55008), (382, 53424), (424, 48132), (477, 42784), (504, 40492), (573, 35616), (636, 32088), (672, 30369), (742, 27504), (764, 26712), (848, 24066), (954, 21392), (1008, 20246), (1113, 18336), (1146, 17808), (1272, 16044), (1337, 15264), (1484, 13752), (1528, 13356), (1696, 12033), (1719, 11872), (1908, 10696), (2016, 10123), (2226, 9168), (2292, 8904), (2544, 8022), (2674, 7632), (2968, 6876), (3056, 6678), (3339, 6112), (3438, 5936), (3816, 5348), (4011, 5088), (4452, 4584)]