21317492728

素因数分解:

$2^3\times 7^2\times {\mathrm{107}}^1\times {\mathrm{508237}}^1$

素因数の和:508364

約数の個数: 48

約数和(自身を含む): 46930696920

約数和(自身を除く): 25613204192

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 107, 196, 214, 392, 428, 749, 856, 1498, 2996, 5243, 5992, 10486, 20972, 41944, 508237, 1016474, 2032948, 3557659, 4065896, 7115318, 14230636, 24903613, 28461272, 49807226, 54381359, 99614452, 108762718, 199228904, 217525436, 380669513, 435050872, 761339026, 1522678052, 2664686591, 3045356104, 5329373182, 10658746364, 21317492728]

約数ペア:

[(1, 21317492728), (2, 10658746364), (4, 5329373182), (7, 3045356104), (8, 2664686591), (14, 1522678052), (28, 761339026), (49, 435050872), (56, 380669513), (98, 217525436), (107, 199228904), (196, 108762718), (214, 99614452), (392, 54381359), (428, 49807226), (749, 28461272), (856, 24903613), (1498, 14230636), (2996, 7115318), (5243, 4065896), (5992, 3557659), (10486, 2032948), (20972, 1016474), (41944, 508237)]