19729918

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{191}}^1$

素因数の和:372

約数の個数: 32

約数和(自身を含む): 33384960

約数和(自身を除く): 13655042

約数列:

[1, 2, 13, 26, 29, 58, 137, 191, 274, 377, 382, 754, 1781, 2483, 3562, 3973, 4966, 5539, 7946, 11078, 26167, 51649, 52334, 72007, 103298, 144014, 340171, 680342, 758843, 1517686, 9864959, 19729918]

約数ペア:

[(1, 19729918), (2, 9864959), (13, 1517686), (26, 758843), (29, 680342), (58, 340171), (137, 144014), (191, 103298), (274, 72007), (377, 52334), (382, 51649), (754, 26167), (1781, 11078), (2483, 7946), (3562, 5539), (3973, 4966)]