21522618

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:121

約数の個数: 128

約数和(自身を含む): 56770560

約数和(自身を除く): 35247942

約数列:

[1, 2, 3, 6, 9, 13, 18, 23, 26, 27, 31, 39, 43, 46, 54, 62, 69, 78, 86, 93, 117, 129, 138, 186, 207, 234, 258, 279, 299, 351, 387, 403, 414, 558, 559, 598, 621, 702, 713, 774, 806, 837, 897, 989, 1118, 1161, 1209, 1242, 1333, 1426, 1674, 1677, 1794, 1978, 2139, 2322, 2418, 2666, 2691, 2967, 3354, 3627, 3999, 4278, 5031, 5382, 5934, 6417, 7254, 7998, 8073, 8901, 9269, 10062, 10881, 11997, 12834, 12857, 15093, 16146, 17329, 17802, 18538, 19251, 21762, 23994, 25714, 26703, 27807, 30186, 30659, 34658, 35991, 38502, 38571, 51987, 53406, 55614, 61318, 71982, 77142, 83421, 91977, 103974, 115713, 155961, 166842, 183954, 231426, 250263, 275931, 311922, 347139, 398567, 467883, 500526, 551862, 694278, 797134, 827793, 935766, 1195701, 1655586, 2391402, 3587103, 7174206, 10761309, 21522618]

約数ペア:

[(1, 21522618), (2, 10761309), (3, 7174206), (6, 3587103), (9, 2391402), (13, 1655586), (18, 1195701), (23, 935766), (26, 827793), (27, 797134), (31, 694278), (39, 551862), (43, 500526), (46, 467883), (54, 398567), (62, 347139), (69, 311922), (78, 275931), (86, 250263), (93, 231426), (117, 183954), (129, 166842), (138, 155961), (186, 115713), (207, 103974), (234, 91977), (258, 83421), (279, 77142), (299, 71982), (351, 61318), (387, 55614), (403, 53406), (414, 51987), (558, 38571), (559, 38502), (598, 35991), (621, 34658), (702, 30659), (713, 30186), (774, 27807), (806, 26703), (837, 25714), (897, 23994), (989, 21762), (1118, 19251), (1161, 18538), (1209, 17802), (1242, 17329), (1333, 16146), (1426, 15093), (1674, 12857), (1677, 12834), (1794, 11997), (1978, 10881), (2139, 10062), (2322, 9269), (2418, 8901), (2666, 8073), (2691, 7998), (2967, 7254), (3354, 6417), (3627, 5934), (3999, 5382), (4278, 5031)]