20281998

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{431}}^1$

素因数の和:501

約数の個数: 64

約数和(自身を含む): 47775744

約数和(自身を除く): 27493746

約数列:

[1, 2, 3, 6, 11, 22, 23, 31, 33, 46, 62, 66, 69, 93, 138, 186, 253, 341, 431, 506, 682, 713, 759, 862, 1023, 1293, 1426, 1518, 2046, 2139, 2586, 4278, 4741, 7843, 9482, 9913, 13361, 14223, 15686, 19826, 23529, 26722, 28446, 29739, 40083, 47058, 59478, 80166, 109043, 146971, 218086, 293942, 307303, 327129, 440913, 614606, 654258, 881826, 921909, 1843818, 3380333, 6760666, 10140999, 20281998]

約数ペア:

[(1, 20281998), (2, 10140999), (3, 6760666), (6, 3380333), (11, 1843818), (22, 921909), (23, 881826), (31, 654258), (33, 614606), (46, 440913), (62, 327129), (66, 307303), (69, 293942), (93, 218086), (138, 146971), (186, 109043), (253, 80166), (341, 59478), (431, 47058), (506, 40083), (682, 29739), (713, 28446), (759, 26722), (862, 23529), (1023, 19826), (1293, 15686), (1426, 14223), (1518, 13361), (2046, 9913), (2139, 9482), (2586, 7843), (4278, 4741)]