21750708

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{521}}^1$

素因数の和:613

約数の個数: 72

約数和(自身を含む): 59984064

約数和(自身を除く): 38233356

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 71, 84, 98, 142, 147, 196, 213, 284, 294, 426, 497, 521, 588, 852, 994, 1042, 1491, 1563, 1988, 2084, 2982, 3126, 3479, 3647, 5964, 6252, 6958, 7294, 10437, 10941, 13916, 14588, 20874, 21882, 25529, 36991, 41748, 43764, 51058, 73982, 76587, 102116, 110973, 147964, 153174, 221946, 258937, 306348, 443892, 517874, 776811, 1035748, 1553622, 1812559, 3107244, 3625118, 5437677, 7250236, 10875354, 21750708]

約数ペア:

[(1, 21750708), (2, 10875354), (3, 7250236), (4, 5437677), (6, 3625118), (7, 3107244), (12, 1812559), (14, 1553622), (21, 1035748), (28, 776811), (42, 517874), (49, 443892), (71, 306348), (84, 258937), (98, 221946), (142, 153174), (147, 147964), (196, 110973), (213, 102116), (284, 76587), (294, 73982), (426, 51058), (497, 43764), (521, 41748), (588, 36991), (852, 25529), (994, 21882), (1042, 20874), (1491, 14588), (1563, 13916), (1988, 10941), (2084, 10437), (2982, 7294), (3126, 6958), (3479, 6252), (3647, 5964)]