15721486768

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3978109}}^1$

素因数の和:3978149

約数の個数: 40

約数和(自身を含む): 34529994800

約数和(自身を除く): 18808508032

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 208, 247, 304, 494, 988, 1976, 3952, 3978109, 7956218, 15912436, 31824872, 51715417, 63649744, 75584071, 103430834, 151168142, 206861668, 302336284, 413723336, 604672568, 827446672, 982592923, 1209345136, 1965185846, 3930371692, 7860743384, 15721486768]

約数ペア:

[(1, 15721486768), (2, 7860743384), (4, 3930371692), (8, 1965185846), (13, 1209345136), (16, 982592923), (19, 827446672), (26, 604672568), (38, 413723336), (52, 302336284), (76, 206861668), (104, 151168142), (152, 103430834), (208, 75584071), (247, 63649744), (304, 51715417), (494, 31824872), (988, 15912436), (1976, 7956218), (3952, 3978109)]