21695908

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{313}}^1$

素因数の和:404

約数の個数: 48

約数和(自身を含む): 43326976

約数和(自身を除く): 21631068

約数列:

[1, 2, 4, 13, 26, 31, 43, 52, 62, 86, 124, 172, 313, 403, 559, 626, 806, 1118, 1252, 1333, 1612, 2236, 2666, 4069, 5332, 8138, 9703, 13459, 16276, 17329, 19406, 26918, 34658, 38812, 53836, 69316, 126139, 174967, 252278, 349934, 417229, 504556, 699868, 834458, 1668916, 5423977, 10847954, 21695908]

約数ペア:

[(1, 21695908), (2, 10847954), (4, 5423977), (13, 1668916), (26, 834458), (31, 699868), (43, 504556), (52, 417229), (62, 349934), (86, 252278), (124, 174967), (172, 126139), (313, 69316), (403, 53836), (559, 38812), (626, 34658), (806, 26918), (1118, 19406), (1252, 17329), (1333, 16276), (1612, 13459), (2236, 9703), (2666, 8138), (4069, 5332)]