21617416

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{1301}}^1$

素因数の和:1405

約数の個数: 32

約数和(自身を含む): 42497280

約数和(自身を除く): 20879864

約数列:

[1, 2, 4, 8, 31, 62, 67, 124, 134, 248, 268, 536, 1301, 2077, 2602, 4154, 5204, 8308, 10408, 16616, 40331, 80662, 87167, 161324, 174334, 322648, 348668, 697336, 2702177, 5404354, 10808708, 21617416]

約数ペア:

[(1, 21617416), (2, 10808708), (4, 5404354), (8, 2702177), (31, 697336), (62, 348668), (67, 322648), (124, 174334), (134, 161324), (248, 87167), (268, 80662), (536, 40331), (1301, 16616), (2077, 10408), (2602, 8308), (4154, 5204)]