20668854.000000000

素因数分解:

$2^7\times {\mathrm{31}}^1\times {\mathrm{181}}^1\times {\mathrm{233}}^1$

素因数の和:459

約数の個数: 64

約数和(自身を含む): 347518080

約数和(自身を除く): 180175616

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 181, 233, 248, 362, 466, 496, 724, 932, 992, 1448, 1864, 1984, 2896, 3728, 3968, 5611, 5792, 7223, 7456, 11222, 11584, 14446, 14912, 22444, 23168, 28892, 29824, 42173, 44888, 57784, 84346, 89776, 115568, 168692, 179552, 231136, 337384, 359104, 462272, 674768, 718208, 924544, 1307363, 1349536, 2614726, 2699072, 5229452, 5398144, 10458904, 20917808, 41835616, 83671232, 167342464]

約数ペア:

[(1, 167342464), (2, 83671232), (4, 41835616), (8, 20917808), (16, 10458904), (31, 5398144), (32, 5229452), (62, 2699072), (64, 2614726), (124, 1349536), (128, 1307363), (181, 924544), (233, 718208), (248, 674768), (362, 462272), (466, 359104), (496, 337384), (724, 231136), (932, 179552), (992, 168692), (1448, 115568), (1864, 89776), (1984, 84346), (2896, 57784), (3728, 44888), (3968, 42173), (5611, 29824), (5792, 28892), (7223, 23168), (7456, 22444), (11222, 14912), (11584, 14446)]