21935745

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{431}}^1$

素因数の和:487

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 21609855

約数列:

[1, 3, 5, 9, 13, 15, 27, 29, 39, 45, 65, 87, 117, 135, 145, 195, 261, 351, 377, 431, 435, 585, 783, 1131, 1293, 1305, 1755, 1885, 2155, 3393, 3879, 3915, 5603, 5655, 6465, 10179, 11637, 12499, 16809, 16965, 19395, 28015, 37497, 50427, 50895, 58185, 62495, 84045, 112491, 151281, 162487, 187485, 252135, 337473, 487461, 562455, 756405, 812435, 1462383, 1687365, 2437305, 4387149, 7311915, 21935745]

約数ペア:

[(1, 21935745), (3, 7311915), (5, 4387149), (9, 2437305), (13, 1687365), (15, 1462383), (27, 812435), (29, 756405), (39, 562455), (45, 487461), (65, 337473), (87, 252135), (117, 187485), (135, 162487), (145, 151281), (195, 112491), (261, 84045), (351, 62495), (377, 58185), (431, 50895), (435, 50427), (585, 37497), (783, 28015), (1131, 19395), (1293, 16965), (1305, 16809), (1755, 12499), (1885, 11637), (2155, 10179), (3393, 6465), (3879, 5655), (3915, 5603)]