20970297789

素因数分解:

$3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{47441}}^1$

素因数の和:47586

約数の個数: 48

約数和(自身を含む): 33921409536

約数和(自身を除く): 12951111747

約数列:

[1, 3, 7, 21, 31, 49, 93, 97, 147, 217, 291, 651, 679, 1519, 2037, 3007, 4557, 4753, 9021, 14259, 21049, 47441, 63147, 142323, 147343, 332087, 442029, 996261, 1470671, 2324609, 4412013, 4601777, 6973827, 10294697, 13805331, 30884091, 32212439, 72062879, 96637317, 142655087, 216188637, 225487073, 427965261, 676461219, 998585609, 2995756827, 6990099263, 20970297789]

約数ペア:

[(1, 20970297789), (3, 6990099263), (7, 2995756827), (21, 998585609), (31, 676461219), (49, 427965261), (93, 225487073), (97, 216188637), (147, 142655087), (217, 96637317), (291, 72062879), (651, 32212439), (679, 30884091), (1519, 13805331), (2037, 10294697), (3007, 6973827), (4557, 4601777), (4753, 4412013), (9021, 2324609), (14259, 1470671), (21049, 996261), (47441, 442029), (63147, 332087), (142323, 147343)]