19977714

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{487}}^1$

素因数の和:591

約数の個数: 48

約数和(自身を含む): 45220032

約数和(自身を除く): 25242318

約数列:

[1, 2, 3, 6, 9, 18, 43, 53, 86, 106, 129, 159, 258, 318, 387, 477, 487, 774, 954, 974, 1461, 2279, 2922, 4383, 4558, 6837, 8766, 13674, 20511, 20941, 25811, 41022, 41882, 51622, 62823, 77433, 125646, 154866, 188469, 232299, 376938, 464598, 1109873, 2219746, 3329619, 6659238, 9988857, 19977714]

約数ペア:

[(1, 19977714), (2, 9988857), (3, 6659238), (6, 3329619), (9, 2219746), (18, 1109873), (43, 464598), (53, 376938), (86, 232299), (106, 188469), (129, 154866), (159, 125646), (258, 77433), (318, 62823), (387, 51622), (477, 41882), (487, 41022), (774, 25811), (954, 20941), (974, 20511), (1461, 13674), (2279, 8766), (2922, 6837), (4383, 4558)]