21383908

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{4519}}^1$

素因数の和:4556

約数の個数: 36

約数和(自身を含む): 46320960

約数和(自身を除く): 24937052

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 169, 182, 338, 364, 676, 1183, 2366, 4519, 4732, 9038, 18076, 31633, 58747, 63266, 117494, 126532, 234988, 411229, 763711, 822458, 1527422, 1644916, 3054844, 5345977, 10691954, 21383908]

約数ペア:

[(1, 21383908), (2, 10691954), (4, 5345977), (7, 3054844), (13, 1644916), (14, 1527422), (26, 822458), (28, 763711), (52, 411229), (91, 234988), (169, 126532), (182, 117494), (338, 63266), (364, 58747), (676, 31633), (1183, 18076), (2366, 9038), (4519, 4732)]