21065604

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{197}}^1$

素因数の和:297

約数の個数: 96

約数和(自身を含む): 60318720

約数和(自身を除く): 39253116

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 19, 21, 28, 38, 42, 57, 67, 76, 84, 114, 133, 134, 197, 201, 228, 266, 268, 394, 399, 402, 469, 532, 591, 788, 798, 804, 938, 1182, 1273, 1379, 1407, 1596, 1876, 2364, 2546, 2758, 2814, 3743, 3819, 4137, 5092, 5516, 5628, 7486, 7638, 8274, 8911, 11229, 13199, 14972, 15276, 16548, 17822, 22458, 26201, 26398, 26733, 35644, 39597, 44916, 52402, 52796, 53466, 78603, 79194, 92393, 104804, 106932, 157206, 158388, 184786, 250781, 277179, 314412, 369572, 501562, 554358, 752343, 1003124, 1108716, 1504686, 1755467, 3009372, 3510934, 5266401, 7021868, 10532802, 21065604]

約数ペア:

[(1, 21065604), (2, 10532802), (3, 7021868), (4, 5266401), (6, 3510934), (7, 3009372), (12, 1755467), (14, 1504686), (19, 1108716), (21, 1003124), (28, 752343), (38, 554358), (42, 501562), (57, 369572), (67, 314412), (76, 277179), (84, 250781), (114, 184786), (133, 158388), (134, 157206), (197, 106932), (201, 104804), (228, 92393), (266, 79194), (268, 78603), (394, 53466), (399, 52796), (402, 52402), (469, 44916), (532, 39597), (591, 35644), (788, 26733), (798, 26398), (804, 26201), (938, 22458), (1182, 17822), (1273, 16548), (1379, 15276), (1407, 14972), (1596, 13199), (1876, 11229), (2364, 8911), (2546, 8274), (2758, 7638), (2814, 7486), (3743, 5628), (3819, 5516), (4137, 5092)]