21006810

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{643}}^1$

素因数の和:681

約数の個数: 96

約数和(自身を含む): 61669440

約数和(自身を除く): 40662630

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 27, 30, 33, 45, 54, 55, 66, 90, 99, 110, 121, 135, 165, 198, 242, 270, 297, 330, 363, 495, 594, 605, 643, 726, 990, 1089, 1210, 1286, 1485, 1815, 1929, 2178, 2970, 3215, 3267, 3630, 3858, 5445, 5787, 6430, 6534, 7073, 9645, 10890, 11574, 14146, 16335, 17361, 19290, 21219, 28935, 32670, 34722, 35365, 42438, 57870, 63657, 70730, 77803, 86805, 106095, 127314, 155606, 173610, 190971, 212190, 233409, 318285, 381942, 389015, 466818, 636570, 700227, 778030, 954855, 1167045, 1400454, 1909710, 2100681, 2334090, 3501135, 4201362, 7002270, 10503405, 21006810]

約数ペア:

[(1, 21006810), (2, 10503405), (3, 7002270), (5, 4201362), (6, 3501135), (9, 2334090), (10, 2100681), (11, 1909710), (15, 1400454), (18, 1167045), (22, 954855), (27, 778030), (30, 700227), (33, 636570), (45, 466818), (54, 389015), (55, 381942), (66, 318285), (90, 233409), (99, 212190), (110, 190971), (121, 173610), (135, 155606), (165, 127314), (198, 106095), (242, 86805), (270, 77803), (297, 70730), (330, 63657), (363, 57870), (495, 42438), (594, 35365), (605, 34722), (643, 32670), (726, 28935), (990, 21219), (1089, 19290), (1210, 17361), (1286, 16335), (1485, 14146), (1815, 11574), (1929, 10890), (2178, 9645), (2970, 7073), (3215, 6534), (3267, 6430), (3630, 5787), (3858, 5445)]