19680908

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{421}}^1$

素因数の和:498

約数の個数: 48

約数和(自身を含む): 39701760

約数和(自身を除く): 20020852

約数列:

[1, 2, 4, 13, 26, 29, 31, 52, 58, 62, 116, 124, 377, 403, 421, 754, 806, 842, 899, 1508, 1612, 1684, 1798, 3596, 5473, 10946, 11687, 12209, 13051, 21892, 23374, 24418, 26102, 46748, 48836, 52204, 158717, 169663, 317434, 339326, 378479, 634868, 678652, 756958, 1513916, 4920227, 9840454, 19680908]

約数ペア:

[(1, 19680908), (2, 9840454), (4, 4920227), (13, 1513916), (26, 756958), (29, 678652), (31, 634868), (52, 378479), (58, 339326), (62, 317434), (116, 169663), (124, 158717), (377, 52204), (403, 48836), (421, 46748), (754, 26102), (806, 24418), (842, 23374), (899, 21892), (1508, 13051), (1612, 12209), (1684, 11687), (1798, 10946), (3596, 5473)]