20091008

素因数分解:

$2^7\times 7^1\times {\mathrm{17}}^1\times {\mathrm{1319}}^1$

素因数の和:1357

約数の個数: 64

約数和(自身を含む): 48470400

約数和(自身を除く): 28379392

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 32, 34, 56, 64, 68, 112, 119, 128, 136, 224, 238, 272, 448, 476, 544, 896, 952, 1088, 1319, 1904, 2176, 2638, 3808, 5276, 7616, 9233, 10552, 15232, 18466, 21104, 22423, 36932, 42208, 44846, 73864, 84416, 89692, 147728, 156961, 168832, 179384, 295456, 313922, 358768, 590912, 627844, 717536, 1181824, 1255688, 1435072, 2511376, 2870144, 5022752, 10045504, 20091008]

約数ペア:

[(1, 20091008), (2, 10045504), (4, 5022752), (7, 2870144), (8, 2511376), (14, 1435072), (16, 1255688), (17, 1181824), (28, 717536), (32, 627844), (34, 590912), (56, 358768), (64, 313922), (68, 295456), (112, 179384), (119, 168832), (128, 156961), (136, 147728), (224, 89692), (238, 84416), (272, 73864), (448, 44846), (476, 42208), (544, 36932), (896, 22423), (952, 21104), (1088, 18466), (1319, 15232), (1904, 10552), (2176, 9233), (2638, 7616), (3808, 5276)]