21438536

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{20149}}^1$

素因数の和:20181

約数の個数: 32

約数和(自身を含む): 48360000

約数和(自身を除く): 26921464

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 133, 152, 266, 532, 1064, 20149, 40298, 80596, 141043, 161192, 282086, 382831, 564172, 765662, 1128344, 1531324, 2679817, 3062648, 5359634, 10719268, 21438536]

約数ペア:

[(1, 21438536), (2, 10719268), (4, 5359634), (7, 3062648), (8, 2679817), (14, 1531324), (19, 1128344), (28, 765662), (38, 564172), (56, 382831), (76, 282086), (133, 161192), (152, 141043), (266, 80596), (532, 40298), (1064, 20149)]