20666528

素因数分解:

$2^5\times {\mathrm{19}}^2\times {\mathrm{1789}}^1$

素因数の和:1837

約数の個数: 36

約数和(自身を含む): 42965370

約数和(自身を除く): 22298842

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 152, 304, 361, 608, 722, 1444, 1789, 2888, 3578, 5776, 7156, 11552, 14312, 28624, 33991, 57248, 67982, 135964, 271928, 543856, 645829, 1087712, 1291658, 2583316, 5166632, 10333264, 20666528]

約数ペア:

[(1, 20666528), (2, 10333264), (4, 5166632), (8, 2583316), (16, 1291658), (19, 1087712), (32, 645829), (38, 543856), (76, 271928), (152, 135964), (304, 67982), (361, 57248), (608, 33991), (722, 28624), (1444, 14312), (1789, 11552), (2888, 7156), (3578, 5776)]