20157280

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{881}}^1$

素因数の和:920

約数の個数: 96

約数和(自身を含む): 56010528

約数和(自身を除く): 35853248

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 32, 40, 44, 52, 55, 65, 80, 88, 104, 110, 130, 143, 160, 176, 208, 220, 260, 286, 352, 416, 440, 520, 572, 715, 880, 881, 1040, 1144, 1430, 1760, 1762, 2080, 2288, 2860, 3524, 4405, 4576, 5720, 7048, 8810, 9691, 11440, 11453, 14096, 17620, 19382, 22880, 22906, 28192, 35240, 38764, 45812, 48455, 57265, 70480, 77528, 91624, 96910, 114530, 125983, 140960, 155056, 183248, 193820, 229060, 251966, 310112, 366496, 387640, 458120, 503932, 629915, 775280, 916240, 1007864, 1259830, 1550560, 1832480, 2015728, 2519660, 4031456, 5039320, 10078640, 20157280]

約数ペア:

[(1, 20157280), (2, 10078640), (4, 5039320), (5, 4031456), (8, 2519660), (10, 2015728), (11, 1832480), (13, 1550560), (16, 1259830), (20, 1007864), (22, 916240), (26, 775280), (32, 629915), (40, 503932), (44, 458120), (52, 387640), (55, 366496), (65, 310112), (80, 251966), (88, 229060), (104, 193820), (110, 183248), (130, 155056), (143, 140960), (160, 125983), (176, 114530), (208, 96910), (220, 91624), (260, 77528), (286, 70480), (352, 57265), (416, 48455), (440, 45812), (520, 38764), (572, 35240), (715, 28192), (880, 22906), (881, 22880), (1040, 19382), (1144, 17620), (1430, 14096), (1760, 11453), (1762, 11440), (2080, 9691), (2288, 8810), (2860, 7048), (3524, 5720), (4405, 4576)]