21590954

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1$

素因数の和:243

約数の個数: 64

約数和(自身を含む): 43683840

約数和(自身を除く): 22092886

約数列:

[1, 2, 7, 11, 14, 19, 22, 38, 47, 77, 94, 133, 154, 157, 209, 266, 314, 329, 418, 517, 658, 893, 1034, 1099, 1463, 1727, 1786, 2198, 2926, 2983, 3454, 3619, 5966, 6251, 7238, 7379, 9823, 12089, 12502, 14758, 19646, 20881, 24178, 32813, 41762, 51653, 65626, 68761, 81169, 103306, 137522, 140201, 162338, 229691, 280402, 459382, 568183, 981407, 1136366, 1542211, 1962814, 3084422, 10795477, 21590954]

約数ペア:

[(1, 21590954), (2, 10795477), (7, 3084422), (11, 1962814), (14, 1542211), (19, 1136366), (22, 981407), (38, 568183), (47, 459382), (77, 280402), (94, 229691), (133, 162338), (154, 140201), (157, 137522), (209, 103306), (266, 81169), (314, 68761), (329, 65626), (418, 51653), (517, 41762), (658, 32813), (893, 24178), (1034, 20881), (1099, 19646), (1463, 14758), (1727, 12502), (1786, 12089), (2198, 9823), (2926, 7379), (2983, 7238), (3454, 6251), (3619, 5966)]