21155436

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{197}}^1$

素因数の和:383

約数の個数: 72

約数和(自身を含む): 56936880

約数和(自身を除く): 35781444

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 157, 171, 197, 228, 314, 342, 394, 471, 591, 628, 684, 788, 942, 1182, 1413, 1773, 1884, 2364, 2826, 2983, 3546, 3743, 5652, 5966, 7092, 7486, 8949, 11229, 11932, 14972, 17898, 22458, 26847, 30929, 33687, 35796, 44916, 53694, 61858, 67374, 92787, 107388, 123716, 134748, 185574, 278361, 371148, 556722, 587651, 1113444, 1175302, 1762953, 2350604, 3525906, 5288859, 7051812, 10577718, 21155436]

約数ペア:

[(1, 21155436), (2, 10577718), (3, 7051812), (4, 5288859), (6, 3525906), (9, 2350604), (12, 1762953), (18, 1175302), (19, 1113444), (36, 587651), (38, 556722), (57, 371148), (76, 278361), (114, 185574), (157, 134748), (171, 123716), (197, 107388), (228, 92787), (314, 67374), (342, 61858), (394, 53694), (471, 44916), (591, 35796), (628, 33687), (684, 30929), (788, 26847), (942, 22458), (1182, 17898), (1413, 14972), (1773, 11932), (1884, 11229), (2364, 8949), (2826, 7486), (2983, 7092), (3546, 5966), (3743, 5652)]