256504640

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{307}}^1\times {\mathrm{373}}^1$

素因数の和:704

約数の個数: 112

約数和(自身を含む): 702210432

約数和(自身を除く): 445705792

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 140, 160, 224, 280, 307, 320, 373, 448, 560, 614, 746, 1120, 1228, 1492, 1535, 1865, 2149, 2240, 2456, 2611, 2984, 3070, 3730, 4298, 4912, 5222, 5968, 6140, 7460, 8596, 9824, 10444, 10745, 11936, 12280, 13055, 14920, 17192, 19648, 20888, 21490, 23872, 24560, 26110, 29840, 34384, 41776, 42980, 49120, 52220, 59680, 68768, 83552, 85960, 98240, 104440, 114511, 119360, 137536, 167104, 171920, 208880, 229022, 343840, 417760, 458044, 572555, 687680, 801577, 835520, 916088, 1145110, 1603154, 1832176, 2290220, 3206308, 3664352, 4007885, 4580440, 6412616, 7328704, 8015770, 9160880, 12825232, 16031540, 18321760, 25650464, 32063080, 36643520, 51300928, 64126160, 128252320, 256504640]

約数ペア:

[(1, 256504640), (2, 128252320), (4, 64126160), (5, 51300928), (7, 36643520), (8, 32063080), (10, 25650464), (14, 18321760), (16, 16031540), (20, 12825232), (28, 9160880), (32, 8015770), (35, 7328704), (40, 6412616), (56, 4580440), (64, 4007885), (70, 3664352), (80, 3206308), (112, 2290220), (140, 1832176), (160, 1603154), (224, 1145110), (280, 916088), (307, 835520), (320, 801577), (373, 687680), (448, 572555), (560, 458044), (614, 417760), (746, 343840), (1120, 229022), (1228, 208880), (1492, 171920), (1535, 167104), (1865, 137536), (2149, 119360), (2240, 114511), (2456, 104440), (2611, 98240), (2984, 85960), (3070, 83552), (3730, 68768), (4298, 59680), (4912, 52220), (5222, 49120), (5968, 42980), (6140, 41776), (7460, 34384), (8596, 29840), (9824, 26110), (10444, 24560), (10745, 23872), (11936, 21490), (12280, 20888), (13055, 19648), (14920, 17192)]