28173730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{6991}}^1$

素因数の和:7042

約数の個数: 32

約数和(自身を含む): 56383488

約数和(自身を除く): 28209758

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 6991, 13982, 34955, 69910, 90883, 181766, 216721, 433442, 454415, 908830, 1083605, 2167210, 2817373, 5634746, 14086865, 28173730]

約数ペア:

[(1, 28173730), (2, 14086865), (5, 5634746), (10, 2817373), (13, 2167210), (26, 1083605), (31, 908830), (62, 454415), (65, 433442), (130, 216721), (155, 181766), (310, 90883), (403, 69910), (806, 34955), (2015, 13982), (4030, 6991)]