21661528

素因数分解:

$2^3\times 7^2\times {\mathrm{55259}}^1$

素因数の和:55279

約数の個数: 24

約数和(自身を含む): 47247300

約数和(自身を除く): 25585772

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 392, 55259, 110518, 221036, 386813, 442072, 773626, 1547252, 2707691, 3094504, 5415382, 10830764, 21661528]

約数ペア:

[(1, 21661528), (2, 10830764), (4, 5415382), (7, 3094504), (8, 2707691), (14, 1547252), (28, 773626), (49, 442072), (56, 386813), (98, 221036), (196, 110518), (392, 55259)]