2784730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{691}}^1$

素因数の和:742

約数の個数: 32

約数和(自身を含む): 5580288

約数和(自身を除く): 2795558

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 691, 806, 1382, 2015, 3455, 4030, 6910, 8983, 17966, 21421, 42842, 44915, 89830, 107105, 214210, 278473, 556946, 1392365, 2784730]

約数ペア:

[(1, 2784730), (2, 1392365), (5, 556946), (10, 278473), (13, 214210), (26, 107105), (31, 89830), (62, 44915), (65, 42842), (130, 21421), (155, 17966), (310, 8983), (403, 6910), (691, 4030), (806, 3455), (1382, 2015)]