257258680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{929}}^1$

素因数の和:1013

約数の個数: 128

約数和(自身を含む): 707097600

約数和(自身を除く): 449838920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 43, 46, 56, 70, 86, 92, 115, 140, 161, 172, 184, 215, 230, 280, 301, 322, 344, 430, 460, 602, 644, 805, 860, 920, 929, 989, 1204, 1288, 1505, 1610, 1720, 1858, 1978, 2408, 3010, 3220, 3716, 3956, 4645, 4945, 6020, 6440, 6503, 6923, 7432, 7912, 9290, 9890, 12040, 13006, 13846, 18580, 19780, 21367, 26012, 27692, 32515, 34615, 37160, 39560, 39947, 42734, 52024, 55384, 65030, 69230, 79894, 85468, 106835, 130060, 138460, 149569, 159788, 170936, 199735, 213670, 260120, 276920, 279629, 299138, 319576, 399470, 427340, 559258, 598276, 747845, 798940, 854680, 918781, 1118516, 1196552, 1398145, 1495690, 1597880, 1837562, 2237032, 2796290, 2991380, 3675124, 4593905, 5592580, 5982760, 6431467, 7350248, 9187810, 11185160, 12862934, 18375620, 25725868, 32157335, 36751240, 51451736, 64314670, 128629340, 257258680]

約数ペア:

[(1, 257258680), (2, 128629340), (4, 64314670), (5, 51451736), (7, 36751240), (8, 32157335), (10, 25725868), (14, 18375620), (20, 12862934), (23, 11185160), (28, 9187810), (35, 7350248), (40, 6431467), (43, 5982760), (46, 5592580), (56, 4593905), (70, 3675124), (86, 2991380), (92, 2796290), (115, 2237032), (140, 1837562), (161, 1597880), (172, 1495690), (184, 1398145), (215, 1196552), (230, 1118516), (280, 918781), (301, 854680), (322, 798940), (344, 747845), (430, 598276), (460, 559258), (602, 427340), (644, 399470), (805, 319576), (860, 299138), (920, 279629), (929, 276920), (989, 260120), (1204, 213670), (1288, 199735), (1505, 170936), (1610, 159788), (1720, 149569), (1858, 138460), (1978, 130060), (2408, 106835), (3010, 85468), (3220, 79894), (3716, 69230), (3956, 65030), (4645, 55384), (4945, 52024), (6020, 42734), (6440, 39947), (6503, 39560), (6923, 37160), (7432, 34615), (7912, 32515), (9290, 27692), (9890, 26012), (12040, 21367), (13006, 19780), (13846, 18580)]