20173808

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{457}}^1$

素因数の和:585

約数の個数: 40

約数和(自身を含む): 40890240

約数和(自身を除く): 20716432

約数列:

[1, 2, 4, 8, 16, 31, 62, 89, 124, 178, 248, 356, 457, 496, 712, 914, 1424, 1828, 2759, 3656, 5518, 7312, 11036, 14167, 22072, 28334, 40673, 44144, 56668, 81346, 113336, 162692, 226672, 325384, 650768, 1260863, 2521726, 5043452, 10086904, 20173808]

約数ペア:

[(1, 20173808), (2, 10086904), (4, 5043452), (8, 2521726), (16, 1260863), (31, 650768), (62, 325384), (89, 226672), (124, 162692), (178, 113336), (248, 81346), (356, 56668), (457, 44144), (496, 40673), (712, 28334), (914, 22072), (1424, 14167), (1828, 11036), (2759, 7312), (3656, 5518)]