20838324

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{139}}^1$

素因数の和:221

約数の個数: 72

約数和(自身を含む): 54495840

約数和(自身を除く): 33657516

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 31, 39, 52, 62, 78, 93, 124, 139, 156, 186, 278, 372, 403, 417, 556, 806, 834, 961, 1209, 1612, 1668, 1807, 1922, 2418, 2883, 3614, 3844, 4309, 4836, 5421, 5766, 7228, 8618, 10842, 11532, 12493, 12927, 17236, 21684, 24986, 25854, 37479, 49972, 51708, 56017, 74958, 112034, 133579, 149916, 168051, 224068, 267158, 336102, 400737, 534316, 672204, 801474, 1602948, 1736527, 3473054, 5209581, 6946108, 10419162, 20838324]

約数ペア:

[(1, 20838324), (2, 10419162), (3, 6946108), (4, 5209581), (6, 3473054), (12, 1736527), (13, 1602948), (26, 801474), (31, 672204), (39, 534316), (52, 400737), (62, 336102), (78, 267158), (93, 224068), (124, 168051), (139, 149916), (156, 133579), (186, 112034), (278, 74958), (372, 56017), (403, 51708), (417, 49972), (556, 37479), (806, 25854), (834, 24986), (961, 21684), (1209, 17236), (1612, 12927), (1668, 12493), (1807, 11532), (1922, 10842), (2418, 8618), (2883, 7228), (3614, 5766), (3844, 5421), (4309, 4836)]