21479745

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{6599}}^1$

素因数の和:6645

約数の個数: 32

約数和(自身を含む): 40550400

約数和(自身を除く): 19070655

約数列:

[1, 3, 5, 7, 15, 21, 31, 35, 93, 105, 155, 217, 465, 651, 1085, 3255, 6599, 19797, 32995, 46193, 98985, 138579, 204569, 230965, 613707, 692895, 1022845, 1431983, 3068535, 4295949, 7159915, 21479745]

約数ペア:

[(1, 21479745), (3, 7159915), (5, 4295949), (7, 3068535), (15, 1431983), (21, 1022845), (31, 692895), (35, 613707), (93, 230965), (105, 204569), (155, 138579), (217, 98985), (465, 46193), (651, 32995), (1085, 19797), (3255, 6599)]