21000775082

素因数分解:

$2^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{191}}^1\times {\mathrm{2531}}^1$

素因数の和:2867

約数の個数: 64

約数和(自身を含む): 37802557440

約数和(自身を除く): 16801782358

約数列:

[1, 2, 7, 14, 29, 58, 107, 191, 203, 214, 382, 406, 749, 1337, 1498, 2531, 2674, 3103, 5062, 5539, 6206, 11078, 17717, 20437, 21721, 35434, 38773, 40874, 43442, 73399, 77546, 143059, 146798, 270817, 286118, 483421, 513793, 541634, 592673, 966842, 1027586, 1185346, 1895719, 3383947, 3791438, 4148711, 6767894, 7853693, 8297422, 14019209, 15707386, 28038418, 51726047, 54975851, 98134463, 103452094, 109951702, 196268926, 362082329, 724164658, 1500055363, 3000110726, 10500387541, 21000775082]

約数ペア:

[(1, 21000775082), (2, 10500387541), (7, 3000110726), (14, 1500055363), (29, 724164658), (58, 362082329), (107, 196268926), (191, 109951702), (203, 103452094), (214, 98134463), (382, 54975851), (406, 51726047), (749, 28038418), (1337, 15707386), (1498, 14019209), (2531, 8297422), (2674, 7853693), (3103, 6767894), (5062, 4148711), (5539, 3791438), (6206, 3383947), (11078, 1895719), (17717, 1185346), (20437, 1027586), (21721, 966842), (35434, 592673), (38773, 541634), (40874, 513793), (43442, 483421), (73399, 286118), (77546, 270817), (143059, 146798)]