389717120

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1511}}^1$

素因数の和:1574

約数の個数: 128

約数和(自身を含む): 1036385280

約数和(自身を除く): 646668160

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 128, 130, 155, 160, 208, 248, 260, 310, 320, 403, 416, 496, 520, 620, 640, 806, 832, 992, 1040, 1240, 1511, 1612, 1664, 1984, 2015, 2080, 2480, 3022, 3224, 3968, 4030, 4160, 4960, 6044, 6448, 7555, 8060, 8320, 9920, 12088, 12896, 15110, 16120, 19643, 19840, 24176, 25792, 30220, 32240, 39286, 46841, 48352, 51584, 60440, 64480, 78572, 93682, 96704, 98215, 120880, 128960, 157144, 187364, 193408, 196430, 234205, 241760, 257920, 314288, 374728, 392860, 468410, 483520, 608933, 628576, 749456, 785720, 936820, 967040, 1217866, 1257152, 1498912, 1571440, 1873640, 2435732, 2514304, 2997824, 3044665, 3142880, 3747280, 4871464, 5995648, 6089330, 6285760, 7494560, 9742928, 12178660, 12571520, 14989120, 19485856, 24357320, 29978240, 38971712, 48714640, 77943424, 97429280, 194858560, 389717120]

約数ペア:

[(1, 389717120), (2, 194858560), (4, 97429280), (5, 77943424), (8, 48714640), (10, 38971712), (13, 29978240), (16, 24357320), (20, 19485856), (26, 14989120), (31, 12571520), (32, 12178660), (40, 9742928), (52, 7494560), (62, 6285760), (64, 6089330), (65, 5995648), (80, 4871464), (104, 3747280), (124, 3142880), (128, 3044665), (130, 2997824), (155, 2514304), (160, 2435732), (208, 1873640), (248, 1571440), (260, 1498912), (310, 1257152), (320, 1217866), (403, 967040), (416, 936820), (496, 785720), (520, 749456), (620, 628576), (640, 608933), (806, 483520), (832, 468410), (992, 392860), (1040, 374728), (1240, 314288), (1511, 257920), (1612, 241760), (1664, 234205), (1984, 196430), (2015, 193408), (2080, 187364), (2480, 157144), (3022, 128960), (3224, 120880), (3968, 98215), (4030, 96704), (4160, 93682), (4960, 78572), (6044, 64480), (6448, 60440), (7555, 51584), (8060, 48352), (8320, 46841), (9920, 39286), (12088, 32240), (12896, 30220), (15110, 25792), (16120, 24176), (19643, 19840)]