19816719

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{443}}^1$

素因数の和:527

約数の個数: 32

約数和(自身を含む): 30234624

約数和(自身を除く): 10417905

約数列:

[1, 3, 13, 31, 37, 39, 93, 111, 403, 443, 481, 1147, 1209, 1329, 1443, 3441, 5759, 13733, 14911, 16391, 17277, 41199, 44733, 49173, 178529, 213083, 508121, 535587, 639249, 1524363, 6605573, 19816719]

約数ペア:

[(1, 19816719), (3, 6605573), (13, 1524363), (31, 639249), (37, 535587), (39, 508121), (93, 213083), (111, 178529), (403, 49173), (443, 44733), (481, 41199), (1147, 17277), (1209, 16391), (1329, 14911), (1443, 13733), (3441, 5759)]