256331520

素因数分解:

$2^8\times 3^3\times 5^1\times {\mathrm{7417}}^1$

素因数の和:7447

約数の個数: 144

約数和(自身を含む): 909743520

約数和(自身を除く): 653412000

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 90, 96, 108, 120, 128, 135, 144, 160, 180, 192, 216, 240, 256, 270, 288, 320, 360, 384, 432, 480, 540, 576, 640, 720, 768, 864, 960, 1080, 1152, 1280, 1440, 1728, 1920, 2160, 2304, 2880, 3456, 3840, 4320, 5760, 6912, 7417, 8640, 11520, 14834, 17280, 22251, 29668, 34560, 37085, 44502, 59336, 66753, 74170, 89004, 111255, 118672, 133506, 148340, 178008, 200259, 222510, 237344, 267012, 296680, 333765, 356016, 400518, 445020, 474688, 534024, 593360, 667530, 712032, 801036, 890040, 949376, 1001295, 1068048, 1186720, 1335060, 1424064, 1602072, 1780080, 1898752, 2002590, 2136096, 2373440, 2670120, 2848128, 3204144, 3560160, 4005180, 4272192, 4746880, 5340240, 5696256, 6408288, 7120320, 8010360, 8544384, 9493760, 10680480, 12816576, 14240640, 16020720, 17088768, 21360960, 25633152, 28481280, 32041440, 42721920, 51266304, 64082880, 85443840, 128165760, 256331520]

約数ペア:

[(1, 256331520), (2, 128165760), (3, 85443840), (4, 64082880), (5, 51266304), (6, 42721920), (8, 32041440), (9, 28481280), (10, 25633152), (12, 21360960), (15, 17088768), (16, 16020720), (18, 14240640), (20, 12816576), (24, 10680480), (27, 9493760), (30, 8544384), (32, 8010360), (36, 7120320), (40, 6408288), (45, 5696256), (48, 5340240), (54, 4746880), (60, 4272192), (64, 4005180), (72, 3560160), (80, 3204144), (90, 2848128), (96, 2670120), (108, 2373440), (120, 2136096), (128, 2002590), (135, 1898752), (144, 1780080), (160, 1602072), (180, 1424064), (192, 1335060), (216, 1186720), (240, 1068048), (256, 1001295), (270, 949376), (288, 890040), (320, 801036), (360, 712032), (384, 667530), (432, 593360), (480, 534024), (540, 474688), (576, 445020), (640, 400518), (720, 356016), (768, 333765), (864, 296680), (960, 267012), (1080, 237344), (1152, 222510), (1280, 200259), (1440, 178008), (1728, 148340), (1920, 133506), (2160, 118672), (2304, 111255), (2880, 89004), (3456, 74170), (3840, 66753), (4320, 59336), (5760, 44502), (6912, 37085), (7417, 34560), (8640, 29668), (11520, 22251), (14834, 17280)]