21000688812

素因数分解:

$2^2\times 3^2\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{339751}}^1$

素因数の和:339879

約数の個数: 72

約数和(自身を含む): 56764405152

約数和(自身を除く): 35763716340

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 34, 36, 51, 68, 101, 102, 153, 202, 204, 303, 306, 404, 606, 612, 909, 1212, 1717, 1818, 3434, 3636, 5151, 6868, 10302, 15453, 20604, 30906, 61812, 339751, 679502, 1019253, 1359004, 2038506, 3057759, 4077012, 5775767, 6115518, 11551534, 12231036, 17327301, 23103068, 34314851, 34654602, 51981903, 68629702, 69309204, 102944553, 103963806, 137259404, 205889106, 207927612, 308833659, 411778212, 583352467, 617667318, 1166704934, 1235334636, 1750057401, 2333409868, 3500114802, 5250172203, 7000229604, 10500344406, 21000688812]

約数ペア:

[(1, 21000688812), (2, 10500344406), (3, 7000229604), (4, 5250172203), (6, 3500114802), (9, 2333409868), (12, 1750057401), (17, 1235334636), (18, 1166704934), (34, 617667318), (36, 583352467), (51, 411778212), (68, 308833659), (101, 207927612), (102, 205889106), (153, 137259404), (202, 103963806), (204, 102944553), (303, 69309204), (306, 68629702), (404, 51981903), (606, 34654602), (612, 34314851), (909, 23103068), (1212, 17327301), (1717, 12231036), (1818, 11551534), (3434, 6115518), (3636, 5775767), (5151, 4077012), (6868, 3057759), (10302, 2038506), (15453, 1359004), (20604, 1019253), (30906, 679502), (61812, 339751)]