21110572

素因数分解:

$2^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:167

約数の個数: 72

約数和(自身を含む): 45849888

約数和(自身を除く): 24739316

約数列:

[1, 2, 4, 7, 14, 28, 37, 41, 49, 71, 74, 82, 98, 142, 148, 164, 196, 259, 284, 287, 497, 518, 574, 994, 1036, 1148, 1517, 1813, 1988, 2009, 2627, 2911, 3034, 3479, 3626, 4018, 5254, 5822, 6068, 6958, 7252, 8036, 10508, 10619, 11644, 13916, 18389, 20377, 21238, 36778, 40754, 42476, 73556, 74333, 81508, 107707, 128723, 142639, 148666, 215414, 257446, 285278, 297332, 430828, 514892, 570556, 753949, 1507898, 3015796, 5277643, 10555286, 21110572]

約数ペア:

[(1, 21110572), (2, 10555286), (4, 5277643), (7, 3015796), (14, 1507898), (28, 753949), (37, 570556), (41, 514892), (49, 430828), (71, 297332), (74, 285278), (82, 257446), (98, 215414), (142, 148666), (148, 142639), (164, 128723), (196, 107707), (259, 81508), (284, 74333), (287, 73556), (497, 42476), (518, 40754), (574, 36778), (994, 21238), (1036, 20377), (1148, 18389), (1517, 13916), (1813, 11644), (1988, 10619), (2009, 10508), (2627, 8036), (2911, 7252), (3034, 6958), (3479, 6068), (3626, 5822), (4018, 5254)]