20188245

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{227}}^1$

素因数の和:271

約数の個数: 72

約数和(自身を含む): 41483232

約数和(自身を除く): 21294987

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 49, 55, 77, 105, 121, 147, 165, 227, 231, 245, 363, 385, 539, 605, 681, 735, 847, 1135, 1155, 1589, 1617, 1815, 2497, 2541, 2695, 3405, 4235, 4767, 5929, 7491, 7945, 8085, 11123, 12485, 12705, 17479, 17787, 23835, 27467, 29645, 33369, 37455, 52437, 55615, 82401, 87395, 88935, 122353, 137335, 166845, 192269, 262185, 367059, 412005, 576807, 611765, 961345, 1345883, 1835295, 2884035, 4037649, 6729415, 20188245]

約数ペア:

[(1, 20188245), (3, 6729415), (5, 4037649), (7, 2884035), (11, 1835295), (15, 1345883), (21, 961345), (33, 611765), (35, 576807), (49, 412005), (55, 367059), (77, 262185), (105, 192269), (121, 166845), (147, 137335), (165, 122353), (227, 88935), (231, 87395), (245, 82401), (363, 55615), (385, 52437), (539, 37455), (605, 33369), (681, 29645), (735, 27467), (847, 23835), (1135, 17787), (1155, 17479), (1589, 12705), (1617, 12485), (1815, 11123), (2497, 8085), (2541, 7945), (2695, 7491), (3405, 5929), (4235, 4767)]