20619440

素因数分解:

$2^4\times 5^1\times {\mathrm{373}}^1\times {\mathrm{691}}^1$

素因数の和:1077

約数の個数: 40

約数和(自身を含む): 48138288

約数和(自身を除く): 27518848

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 373, 691, 746, 1382, 1492, 1865, 2764, 2984, 3455, 3730, 5528, 5968, 6910, 7460, 11056, 13820, 14920, 27640, 29840, 55280, 257743, 515486, 1030972, 1288715, 2061944, 2577430, 4123888, 5154860, 10309720, 20619440]

約数ペア:

[(1, 20619440), (2, 10309720), (4, 5154860), (5, 4123888), (8, 2577430), (10, 2061944), (16, 1288715), (20, 1030972), (40, 515486), (80, 257743), (373, 55280), (691, 29840), (746, 27640), (1382, 14920), (1492, 13820), (1865, 11056), (2764, 7460), (2984, 6910), (3455, 5968), (3730, 5528)]