21439990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1$

素因数の和:118

約数の個数: 96

約数和(自身を含む): 48263040

約数和(自身を除く): 26823050

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 29, 47, 55, 58, 65, 94, 110, 121, 130, 143, 145, 235, 242, 286, 290, 319, 377, 470, 517, 605, 611, 638, 715, 754, 1034, 1210, 1222, 1363, 1430, 1573, 1595, 1885, 2585, 2726, 3055, 3146, 3190, 3509, 3770, 4147, 5170, 5687, 6110, 6721, 6815, 7018, 7865, 8294, 11374, 13442, 13630, 14993, 15730, 17545, 17719, 20735, 28435, 29986, 33605, 35090, 35438, 41470, 45617, 56870, 67210, 73931, 74965, 88595, 91234, 147862, 149930, 164923, 177190, 194909, 228085, 329846, 369655, 389818, 456170, 739310, 824615, 974545, 1649230, 1949090, 2143999, 4287998, 10719995, 21439990]

約数ペア:

[(1, 21439990), (2, 10719995), (5, 4287998), (10, 2143999), (11, 1949090), (13, 1649230), (22, 974545), (26, 824615), (29, 739310), (47, 456170), (55, 389818), (58, 369655), (65, 329846), (94, 228085), (110, 194909), (121, 177190), (130, 164923), (143, 149930), (145, 147862), (235, 91234), (242, 88595), (286, 74965), (290, 73931), (319, 67210), (377, 56870), (470, 45617), (517, 41470), (605, 35438), (611, 35090), (638, 33605), (715, 29986), (754, 28435), (1034, 20735), (1210, 17719), (1222, 17545), (1363, 15730), (1430, 14993), (1573, 13630), (1595, 13442), (1885, 11374), (2585, 8294), (2726, 7865), (3055, 7018), (3146, 6815), (3190, 6721), (3509, 6110), (3770, 5687), (4147, 5170)]