21002655

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^3\times {\mathrm{47}}^1$

素因数の和:148

約数の個数: 32

約数和(自身を含む): 35463168

約数和(自身を除く): 14460513

約数列:

[1, 3, 5, 15, 31, 47, 93, 141, 155, 235, 465, 705, 961, 1457, 2883, 4371, 4805, 7285, 14415, 21855, 29791, 45167, 89373, 135501, 148955, 225835, 446865, 677505, 1400177, 4200531, 7000885, 21002655]

約数ペア:

[(1, 21002655), (3, 7000885), (5, 4200531), (15, 1400177), (31, 677505), (47, 446865), (93, 225835), (141, 148955), (155, 135501), (235, 89373), (465, 45167), (705, 29791), (961, 21855), (1457, 14415), (2883, 7285), (4371, 4805)]