21640206

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{163}}^1$

素因数の和:313

約数の個数: 64

約数和(自身を含む): 51955200

約数和(自身を除く): 30314994

約数列:

[1, 2, 3, 6, 7, 14, 21, 29, 42, 58, 87, 109, 163, 174, 203, 218, 326, 327, 406, 489, 609, 654, 763, 978, 1141, 1218, 1526, 2282, 2289, 3161, 3423, 4578, 4727, 6322, 6846, 9454, 9483, 14181, 17767, 18966, 22127, 28362, 33089, 35534, 44254, 53301, 66178, 66381, 99267, 106602, 124369, 132762, 198534, 248738, 373107, 515243, 746214, 1030486, 1545729, 3091458, 3606701, 7213402, 10820103, 21640206]

約数ペア:

[(1, 21640206), (2, 10820103), (3, 7213402), (6, 3606701), (7, 3091458), (14, 1545729), (21, 1030486), (29, 746214), (42, 515243), (58, 373107), (87, 248738), (109, 198534), (163, 132762), (174, 124369), (203, 106602), (218, 99267), (326, 66381), (327, 66178), (406, 53301), (489, 44254), (609, 35534), (654, 33089), (763, 28362), (978, 22127), (1141, 18966), (1218, 17767), (1526, 14181), (2282, 9483), (2289, 9454), (3161, 6846), (3423, 6322), (4578, 4727)]