81181840

素因数分解:

$2^4\times 5^1\times {\mathrm{73}}^1\times {\mathrm{13901}}^1$

素因数の和:13987

約数の個数: 40

約数和(自身を含む): 191347128

約数和(自身を除く): 110165288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 73, 80, 146, 292, 365, 584, 730, 1168, 1460, 2920, 5840, 13901, 27802, 55604, 69505, 111208, 139010, 222416, 278020, 556040, 1014773, 1112080, 2029546, 4059092, 5073865, 8118184, 10147730, 16236368, 20295460, 40590920, 81181840]

約数ペア:

[(1, 81181840), (2, 40590920), (4, 20295460), (5, 16236368), (8, 10147730), (10, 8118184), (16, 5073865), (20, 4059092), (40, 2029546), (73, 1112080), (80, 1014773), (146, 556040), (292, 278020), (365, 222416), (584, 139010), (730, 111208), (1168, 69505), (1460, 55604), (2920, 27802), (5840, 13901)]