257479040

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{4421}}^1$

素因数の和:4460

約数の個数: 128

約数和(自身を含む): 757753920

約数和(自身を除く): 500274880

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 64, 65, 70, 80, 91, 104, 112, 128, 130, 140, 160, 182, 208, 224, 260, 280, 320, 364, 416, 448, 455, 520, 560, 640, 728, 832, 896, 910, 1040, 1120, 1456, 1664, 1820, 2080, 2240, 2912, 3640, 4160, 4421, 4480, 5824, 7280, 8320, 8842, 11648, 14560, 17684, 22105, 29120, 30947, 35368, 44210, 57473, 58240, 61894, 70736, 88420, 114946, 123788, 141472, 154735, 176840, 229892, 247576, 282944, 287365, 309470, 353680, 402311, 459784, 495152, 565888, 574730, 618940, 707360, 804622, 919568, 990304, 1149460, 1237880, 1414720, 1609244, 1839136, 1980608, 2011555, 2298920, 2475760, 2829440, 3218488, 3678272, 3961216, 4023110, 4597840, 4951520, 6436976, 7356544, 8046220, 9195680, 9903040, 12873952, 16092440, 18391360, 19806080, 25747904, 32184880, 36782720, 51495808, 64369760, 128739520, 257479040]

約数ペア:

[(1, 257479040), (2, 128739520), (4, 64369760), (5, 51495808), (7, 36782720), (8, 32184880), (10, 25747904), (13, 19806080), (14, 18391360), (16, 16092440), (20, 12873952), (26, 9903040), (28, 9195680), (32, 8046220), (35, 7356544), (40, 6436976), (52, 4951520), (56, 4597840), (64, 4023110), (65, 3961216), (70, 3678272), (80, 3218488), (91, 2829440), (104, 2475760), (112, 2298920), (128, 2011555), (130, 1980608), (140, 1839136), (160, 1609244), (182, 1414720), (208, 1237880), (224, 1149460), (260, 990304), (280, 919568), (320, 804622), (364, 707360), (416, 618940), (448, 574730), (455, 565888), (520, 495152), (560, 459784), (640, 402311), (728, 353680), (832, 309470), (896, 287365), (910, 282944), (1040, 247576), (1120, 229892), (1456, 176840), (1664, 154735), (1820, 141472), (2080, 123788), (2240, 114946), (2912, 88420), (3640, 70736), (4160, 61894), (4421, 58240), (4480, 57473), (5824, 44210), (7280, 35368), (8320, 30947), (8842, 29120), (11648, 22105), (14560, 17684)]