28780491243

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{983}}^1\times {\mathrm{73379}}^1$

素因数の和:74391

約数の個数: 32

約数和(自身を含む): 46211788800

約数和(自身を除く): 17431297557

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 983, 2949, 6881, 18677, 20643, 56031, 73379, 130739, 220137, 392217, 513653, 1394201, 1540959, 4182603, 9759407, 29278221, 72131557, 216394671, 504920899, 1370499583, 1514762697, 4111498749, 9593497081, 28780491243]

約数ペア:

[(1, 28780491243), (3, 9593497081), (7, 4111498749), (19, 1514762697), (21, 1370499583), (57, 504920899), (133, 216394671), (399, 72131557), (983, 29278221), (2949, 9759407), (6881, 4182603), (18677, 1540959), (20643, 1394201), (56031, 513653), (73379, 392217), (130739, 220137)]