128000640

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{409}}^1$

素因数の和:594

約数の個数: 128

約数和(自身を含む): 411508800

約数和(自身を除く): 283508160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 163, 192, 240, 320, 326, 384, 409, 480, 489, 640, 652, 815, 818, 960, 978, 1227, 1304, 1630, 1636, 1920, 1956, 2045, 2445, 2454, 2608, 3260, 3272, 3912, 4090, 4890, 4908, 5216, 6135, 6520, 6544, 7824, 8180, 9780, 9816, 10432, 12270, 13040, 13088, 15648, 16360, 19560, 19632, 20864, 24540, 26080, 26176, 31296, 32720, 39120, 39264, 49080, 52160, 52352, 62592, 65440, 66667, 78240, 78528, 98160, 104320, 130880, 133334, 156480, 157056, 196320, 200001, 261760, 266668, 312960, 333335, 392640, 400002, 533336, 666670, 785280, 800004, 1000005, 1066672, 1333340, 1600008, 2000010, 2133344, 2666680, 3200016, 4000020, 4266688, 5333360, 6400032, 8000040, 8533376, 10666720, 12800064, 16000080, 21333440, 25600128, 32000160, 42666880, 64000320, 128000640]

約数ペア:

[(1, 128000640), (2, 64000320), (3, 42666880), (4, 32000160), (5, 25600128), (6, 21333440), (8, 16000080), (10, 12800064), (12, 10666720), (15, 8533376), (16, 8000040), (20, 6400032), (24, 5333360), (30, 4266688), (32, 4000020), (40, 3200016), (48, 2666680), (60, 2133344), (64, 2000010), (80, 1600008), (96, 1333340), (120, 1066672), (128, 1000005), (160, 800004), (163, 785280), (192, 666670), (240, 533336), (320, 400002), (326, 392640), (384, 333335), (409, 312960), (480, 266668), (489, 261760), (640, 200001), (652, 196320), (815, 157056), (818, 156480), (960, 133334), (978, 130880), (1227, 104320), (1304, 98160), (1630, 78528), (1636, 78240), (1920, 66667), (1956, 65440), (2045, 62592), (2445, 52352), (2454, 52160), (2608, 49080), (3260, 39264), (3272, 39120), (3912, 32720), (4090, 31296), (4890, 26176), (4908, 26080), (5216, 24540), (6135, 20864), (6520, 19632), (6544, 19560), (7824, 16360), (8180, 15648), (9780, 13088), (9816, 13040), (10432, 12270)]