18245738

素因数分解:

$2^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{239}}^1$

素因数の和:315

約数の個数: 48

約数和(自身を含む): 34473600

約数和(自身を除く): 16227862

約数列:

[1, 2, 7, 14, 19, 38, 41, 49, 82, 98, 133, 239, 266, 287, 478, 574, 779, 931, 1558, 1673, 1862, 2009, 3346, 4018, 4541, 5453, 9082, 9799, 10906, 11711, 19598, 23422, 31787, 38171, 63574, 68593, 76342, 137186, 186181, 222509, 372362, 445018, 480151, 960302, 1303267, 2606534, 9122869, 18245738]

約数ペア:

[(1, 18245738), (2, 9122869), (7, 2606534), (14, 1303267), (19, 960302), (38, 480151), (41, 445018), (49, 372362), (82, 222509), (98, 186181), (133, 137186), (239, 76342), (266, 68593), (287, 63574), (478, 38171), (574, 31787), (779, 23422), (931, 19598), (1558, 11711), (1673, 10906), (1862, 9799), (2009, 9082), (3346, 5453), (4018, 4541)]