28115514

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{127}}^1\times {\mathrm{251}}^1$

素因数の和:400

約数の個数: 72

約数和(自身を含む): 71705088

約数和(自身を除く): 43589574

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 49, 63, 98, 126, 127, 147, 251, 254, 294, 381, 441, 502, 753, 762, 882, 889, 1143, 1506, 1757, 1778, 2259, 2286, 2667, 3514, 4518, 5271, 5334, 6223, 8001, 10542, 12299, 12446, 15813, 16002, 18669, 24598, 31626, 31877, 36897, 37338, 56007, 63754, 73794, 95631, 110691, 112014, 191262, 221382, 223139, 286893, 446278, 573786, 669417, 1338834, 1561973, 2008251, 3123946, 4016502, 4685919, 9371838, 14057757, 28115514]

約数ペア:

[(1, 28115514), (2, 14057757), (3, 9371838), (6, 4685919), (7, 4016502), (9, 3123946), (14, 2008251), (18, 1561973), (21, 1338834), (42, 669417), (49, 573786), (63, 446278), (98, 286893), (126, 223139), (127, 221382), (147, 191262), (251, 112014), (254, 110691), (294, 95631), (381, 73794), (441, 63754), (502, 56007), (753, 37338), (762, 36897), (882, 31877), (889, 31626), (1143, 24598), (1506, 18669), (1757, 16002), (1778, 15813), (2259, 12446), (2286, 12299), (2667, 10542), (3514, 8001), (4518, 6223), (5271, 5334)]