20160648320

素因数分解:

$2^7\times 5^1\times {\mathrm{79}}^1\times {\mathrm{283}}^1\times {\mathrm{1409}}^1$

素因数の和:1790

約数の個数: 128

約数和(自身を含む): 49013856000

約数和(自身を除く): 28853207680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 283, 316, 320, 395, 566, 632, 640, 790, 1132, 1264, 1409, 1415, 1580, 2264, 2528, 2818, 2830, 3160, 4528, 5056, 5636, 5660, 6320, 7045, 9056, 10112, 11272, 11320, 12640, 14090, 18112, 22357, 22544, 22640, 25280, 28180, 36224, 44714, 45088, 45280, 50560, 56360, 89428, 90176, 90560, 111311, 111785, 112720, 178856, 180352, 181120, 222622, 223570, 225440, 357712, 398747, 445244, 447140, 450880, 556555, 715424, 797494, 890488, 894280, 901760, 1113110, 1430848, 1594988, 1780976, 1788560, 1993735, 2226220, 2861696, 3189976, 3561952, 3577120, 3987470, 4452440, 6379952, 7123904, 7154240, 7974940, 8904880, 12759904, 14247808, 14308480, 15949880, 17809760, 25519808, 31501013, 31899760, 35619520, 51039616, 63002026, 63799520, 71239040, 126004052, 127599040, 157505065, 252008104, 255198080, 315010130, 504016208, 630020260, 1008032416, 1260040520, 2016064832, 2520081040, 4032129664, 5040162080, 10080324160, 20160648320]

約数ペア:

[(1, 20160648320), (2, 10080324160), (4, 5040162080), (5, 4032129664), (8, 2520081040), (10, 2016064832), (16, 1260040520), (20, 1008032416), (32, 630020260), (40, 504016208), (64, 315010130), (79, 255198080), (80, 252008104), (128, 157505065), (158, 127599040), (160, 126004052), (283, 71239040), (316, 63799520), (320, 63002026), (395, 51039616), (566, 35619520), (632, 31899760), (640, 31501013), (790, 25519808), (1132, 17809760), (1264, 15949880), (1409, 14308480), (1415, 14247808), (1580, 12759904), (2264, 8904880), (2528, 7974940), (2818, 7154240), (2830, 7123904), (3160, 6379952), (4528, 4452440), (5056, 3987470), (5636, 3577120), (5660, 3561952), (6320, 3189976), (7045, 2861696), (9056, 2226220), (10112, 1993735), (11272, 1788560), (11320, 1780976), (12640, 1594988), (14090, 1430848), (18112, 1113110), (22357, 901760), (22544, 894280), (22640, 890488), (25280, 797494), (28180, 715424), (36224, 556555), (44714, 450880), (45088, 447140), (45280, 445244), (50560, 398747), (56360, 357712), (89428, 225440), (90176, 223570), (90560, 222622), (111311, 181120), (111785, 180352), (112720, 178856)]