257949945

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{163}}^1$

素因数の和:347

約数の個数: 96

約数和(自身を含む): 515773440

約数和(自身を除く): 257823495

約数列:

[1, 3, 5, 9, 11, 15, 23, 33, 45, 55, 69, 99, 115, 139, 163, 165, 207, 253, 345, 417, 489, 495, 695, 759, 815, 1035, 1251, 1265, 1467, 1529, 1793, 2085, 2277, 2445, 3197, 3749, 3795, 4587, 5379, 6255, 7335, 7645, 8965, 9591, 11247, 11385, 13761, 15985, 16137, 18745, 22657, 22935, 26895, 28773, 33741, 35167, 41239, 47955, 56235, 67971, 68805, 80685, 105501, 113285, 123717, 143865, 168705, 175835, 203913, 206195, 249227, 316503, 339855, 371151, 521111, 527505, 618585, 747681, 1019565, 1246135, 1563333, 1582515, 1855755, 2243043, 2605555, 3738405, 4689999, 5732221, 7816665, 11215215, 17196663, 23449995, 28661105, 51589989, 85983315, 257949945]

約数ペア:

[(1, 257949945), (3, 85983315), (5, 51589989), (9, 28661105), (11, 23449995), (15, 17196663), (23, 11215215), (33, 7816665), (45, 5732221), (55, 4689999), (69, 3738405), (99, 2605555), (115, 2243043), (139, 1855755), (163, 1582515), (165, 1563333), (207, 1246135), (253, 1019565), (345, 747681), (417, 618585), (489, 527505), (495, 521111), (695, 371151), (759, 339855), (815, 316503), (1035, 249227), (1251, 206195), (1265, 203913), (1467, 175835), (1529, 168705), (1793, 143865), (2085, 123717), (2277, 113285), (2445, 105501), (3197, 80685), (3749, 68805), (3795, 67971), (4587, 56235), (5379, 47955), (6255, 41239), (7335, 35167), (7645, 33741), (8965, 28773), (9591, 26895), (11247, 22935), (11385, 22657), (13761, 18745), (15985, 16137)]