16638866447

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{257}}^1\times {\mathrm{353}}^1$

素因数の和:840

約数の個数: 48

約数和(自身を含む): 20615459040

約数和(自身を除く): 3976592593

約数列:

[1, 7, 19, 49, 133, 197, 257, 353, 931, 1379, 1799, 2471, 3743, 4883, 6707, 9653, 12593, 17297, 26201, 34181, 46949, 50629, 69541, 90721, 183407, 239267, 328643, 354403, 486787, 635047, 961951, 1321279, 1723699, 2480821, 3407509, 4445329, 6733657, 9248953, 12065893, 17872037, 47135599, 64742671, 84461251, 125104259, 339568703, 875729813, 2376980921, 16638866447]

約数ペア:

[(1, 16638866447), (7, 2376980921), (19, 875729813), (49, 339568703), (133, 125104259), (197, 84461251), (257, 64742671), (353, 47135599), (931, 17872037), (1379, 12065893), (1799, 9248953), (2471, 6733657), (3743, 4445329), (4883, 3407509), (6707, 2480821), (9653, 1723699), (12593, 1321279), (17297, 961951), (26201, 635047), (34181, 486787), (46949, 354403), (50629, 328643), (69541, 239267), (90721, 183407)]