128001680

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{577}}^1$

素因数の和:696

約数の個数: 80

約数和(自身を含む): 309623040

約数和(自身を除く): 181621360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 59, 80, 94, 118, 188, 235, 236, 295, 376, 470, 472, 577, 590, 752, 940, 944, 1154, 1180, 1880, 2308, 2360, 2773, 2885, 3760, 4616, 4720, 5546, 5770, 9232, 11092, 11540, 13865, 22184, 23080, 27119, 27730, 34043, 44368, 46160, 54238, 55460, 68086, 108476, 110920, 135595, 136172, 170215, 216952, 221840, 271190, 272344, 340430, 433904, 542380, 544688, 680860, 1084760, 1361720, 1600021, 2169520, 2723440, 3200042, 6400084, 8000105, 12800168, 16000210, 25600336, 32000420, 64000840, 128001680]

約数ペア:

[(1, 128001680), (2, 64000840), (4, 32000420), (5, 25600336), (8, 16000210), (10, 12800168), (16, 8000105), (20, 6400084), (40, 3200042), (47, 2723440), (59, 2169520), (80, 1600021), (94, 1361720), (118, 1084760), (188, 680860), (235, 544688), (236, 542380), (295, 433904), (376, 340430), (470, 272344), (472, 271190), (577, 221840), (590, 216952), (752, 170215), (940, 136172), (944, 135595), (1154, 110920), (1180, 108476), (1880, 68086), (2308, 55460), (2360, 54238), (2773, 46160), (2885, 44368), (3760, 34043), (4616, 27730), (4720, 27119), (5546, 23080), (5770, 22184), (9232, 13865), (11092, 11540)]