19899537

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{7963}}^1$

素因数の和:7997

約数の個数: 24

約数和(自身を含む): 32684256

約数和(自身を除く): 12784719

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 357, 833, 2499, 7963, 23889, 55741, 135371, 167223, 390187, 406113, 947597, 1170561, 2842791, 6633179, 19899537]

約数ペア:

[(1, 19899537), (3, 6633179), (7, 2842791), (17, 1170561), (21, 947597), (49, 406113), (51, 390187), (119, 167223), (147, 135371), (357, 55741), (833, 23889), (2499, 7963)]