21807708

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{3251}}^1$

素因数の和:3314

約数の個数: 48

約数和(自身を含む): 56090496

約数和(自身を除く): 34282788

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 43, 52, 78, 86, 129, 156, 172, 258, 516, 559, 1118, 1677, 2236, 3251, 3354, 6502, 6708, 9753, 13004, 19506, 39012, 42263, 84526, 126789, 139793, 169052, 253578, 279586, 419379, 507156, 559172, 838758, 1677516, 1817309, 3634618, 5451927, 7269236, 10903854, 21807708]

約数ペア:

[(1, 21807708), (2, 10903854), (3, 7269236), (4, 5451927), (6, 3634618), (12, 1817309), (13, 1677516), (26, 838758), (39, 559172), (43, 507156), (52, 419379), (78, 279586), (86, 253578), (129, 169052), (156, 139793), (172, 126789), (258, 84526), (516, 42263), (559, 39012), (1118, 19506), (1677, 13004), (2236, 9753), (3251, 6708), (3354, 6502)]