18685808

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{373}}^1$

素因数の和:513

約数の個数: 40

約数和(自身を含む): 37842816

約数和(自身を除く): 19157008

約数列:

[1, 2, 4, 8, 16, 31, 62, 101, 124, 202, 248, 373, 404, 496, 746, 808, 1492, 1616, 2984, 3131, 5968, 6262, 11563, 12524, 23126, 25048, 37673, 46252, 50096, 75346, 92504, 150692, 185008, 301384, 602768, 1167863, 2335726, 4671452, 9342904, 18685808]

約数ペア:

[(1, 18685808), (2, 9342904), (4, 4671452), (8, 2335726), (16, 1167863), (31, 602768), (62, 301384), (101, 185008), (124, 150692), (202, 92504), (248, 75346), (373, 50096), (404, 46252), (496, 37673), (746, 25048), (808, 23126), (1492, 12524), (1616, 11563), (2984, 6262), (3131, 5968)]