20407814

素因数分解:

$2^1\times 7^3\times {\mathrm{71}}^1\times {\mathrm{419}}^1$

素因数の和:513

約数の個数: 32

約数和(自身を含む): 36288000

約数和(自身を除く): 15880186

約数列:

[1, 2, 7, 14, 49, 71, 98, 142, 343, 419, 497, 686, 838, 994, 2933, 3479, 5866, 6958, 20531, 24353, 29749, 41062, 48706, 59498, 143717, 208243, 287434, 416486, 1457701, 2915402, 10203907, 20407814]

約数ペア:

[(1, 20407814), (2, 10203907), (7, 2915402), (14, 1457701), (49, 416486), (71, 287434), (98, 208243), (142, 143717), (343, 59498), (419, 48706), (497, 41062), (686, 29749), (838, 24353), (994, 20531), (2933, 6958), (3479, 5866)]