21405216

素因数分解:

$2^5\times 3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{601}}^1$

素因数の和:674

約数の個数: 96

約数和(自身を含む): 65536128

約数和(自身を除く): 44130912

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 53, 56, 84, 96, 106, 112, 159, 168, 212, 224, 318, 336, 371, 424, 601, 636, 672, 742, 848, 1113, 1202, 1272, 1484, 1696, 1803, 2226, 2404, 2544, 2968, 3606, 4207, 4452, 4808, 5088, 5936, 7212, 8414, 8904, 9616, 11872, 12621, 14424, 16828, 17808, 19232, 25242, 28848, 31853, 33656, 35616, 50484, 57696, 63706, 67312, 95559, 100968, 127412, 134624, 191118, 201936, 222971, 254824, 382236, 403872, 445942, 509648, 668913, 764472, 891884, 1019296, 1337826, 1528944, 1783768, 2675652, 3057888, 3567536, 5351304, 7135072, 10702608, 21405216]

約数ペア:

[(1, 21405216), (2, 10702608), (3, 7135072), (4, 5351304), (6, 3567536), (7, 3057888), (8, 2675652), (12, 1783768), (14, 1528944), (16, 1337826), (21, 1019296), (24, 891884), (28, 764472), (32, 668913), (42, 509648), (48, 445942), (53, 403872), (56, 382236), (84, 254824), (96, 222971), (106, 201936), (112, 191118), (159, 134624), (168, 127412), (212, 100968), (224, 95559), (318, 67312), (336, 63706), (371, 57696), (424, 50484), (601, 35616), (636, 33656), (672, 31853), (742, 28848), (848, 25242), (1113, 19232), (1202, 17808), (1272, 16828), (1484, 14424), (1696, 12621), (1803, 11872), (2226, 9616), (2404, 8904), (2544, 8414), (2968, 7212), (3606, 5936), (4207, 5088), (4452, 4808)]