21658845

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{1019}}^1$

素因数の和:1149

約数の個数: 32

約数和(自身を含む): 37699200

約数和(自身を除く): 16040355

約数列:

[1, 3, 5, 13, 15, 39, 65, 109, 195, 327, 545, 1019, 1417, 1635, 3057, 4251, 5095, 7085, 13247, 15285, 21255, 39741, 66235, 111071, 198705, 333213, 555355, 1443923, 1666065, 4331769, 7219615, 21658845]

約数ペア:

[(1, 21658845), (3, 7219615), (5, 4331769), (13, 1666065), (15, 1443923), (39, 555355), (65, 333213), (109, 198705), (195, 111071), (327, 66235), (545, 39741), (1019, 21255), (1417, 15285), (1635, 13247), (3057, 7085), (4251, 5095)]