21878045217

素因数分解:

$3^3\times 7^1\times {\mathrm{4889}}^1\times {\mathrm{23677}}^1$

素因数の和:28582

約数の個数: 32

約数和(自身を含む): 37051334400

約数和(自身を除く): 15173289183

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 4889, 14667, 23677, 34223, 44001, 71031, 102669, 132003, 165739, 213093, 308007, 497217, 639279, 924021, 1491651, 4474953, 115756853, 347270559, 810297971, 1041811677, 2430893913, 3125435031, 7292681739, 21878045217]

約数ペア:

[(1, 21878045217), (3, 7292681739), (7, 3125435031), (9, 2430893913), (21, 1041811677), (27, 810297971), (63, 347270559), (189, 115756853), (4889, 4474953), (14667, 1491651), (23677, 924021), (34223, 639279), (44001, 497217), (71031, 308007), (102669, 213093), (132003, 165739)]