638007897

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{257}}^1\times {\mathrm{449}}^1$

素因数の和:825

約数の個数: 32

約数和(自身を含む): 910224000

約数和(自身を除く): 272216103

約数列:

[1, 3, 19, 57, 97, 257, 291, 449, 771, 1347, 1843, 4883, 5529, 8531, 14649, 24929, 25593, 43553, 74787, 115393, 130659, 346179, 473651, 827507, 1420953, 2192467, 2482521, 6577401, 11193121, 33579363, 212669299, 638007897]

約数ペア:

[(1, 638007897), (3, 212669299), (19, 33579363), (57, 11193121), (97, 6577401), (257, 2482521), (291, 2192467), (449, 1420953), (771, 827507), (1347, 473651), (1843, 346179), (4883, 130659), (5529, 115393), (8531, 74787), (14649, 43553), (24929, 25593)]