28153839

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1721}}^1$

素因数の和:1791

約数の個数: 32

約数和(自身を含む): 46287360

約数和(自身を除く): 18133521

約数列:

[1, 3, 7, 19, 21, 41, 57, 123, 133, 287, 399, 779, 861, 1721, 2337, 5163, 5453, 12047, 16359, 32699, 36141, 70561, 98097, 211683, 228893, 493927, 686679, 1340659, 1481781, 4021977, 9384613, 28153839]

約数ペア:

[(1, 28153839), (3, 9384613), (7, 4021977), (19, 1481781), (21, 1340659), (41, 686679), (57, 493927), (123, 228893), (133, 211683), (287, 98097), (399, 70561), (779, 36141), (861, 32699), (1721, 16359), (2337, 12047), (5163, 5453)]