21409620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{239}}^1\times {\mathrm{1493}}^1$

素因数の和:1744

約数の個数: 48

約数和(自身を含む): 60238080

約数和(自身を除く): 38828460

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 239, 478, 717, 956, 1195, 1434, 1493, 2390, 2868, 2986, 3585, 4479, 4780, 5972, 7170, 7465, 8958, 14340, 14930, 17916, 22395, 29860, 44790, 89580, 356827, 713654, 1070481, 1427308, 1784135, 2140962, 3568270, 4281924, 5352405, 7136540, 10704810, 21409620]

約数ペア:

[(1, 21409620), (2, 10704810), (3, 7136540), (4, 5352405), (5, 4281924), (6, 3568270), (10, 2140962), (12, 1784135), (15, 1427308), (20, 1070481), (30, 713654), (60, 356827), (239, 89580), (478, 44790), (717, 29860), (956, 22395), (1195, 17916), (1434, 14930), (1493, 14340), (2390, 8958), (2868, 7465), (2986, 7170), (3585, 5972), (4479, 4780)]