18558260

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{653}}^1$

素因数の和:705

約数の個数: 72

約数和(自身を含む): 46970280

約数和(自身を除く): 28412020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 49, 58, 70, 98, 116, 140, 145, 196, 203, 245, 290, 406, 490, 580, 653, 812, 980, 1015, 1306, 1421, 2030, 2612, 2842, 3265, 4060, 4571, 5684, 6530, 7105, 9142, 13060, 14210, 18284, 18937, 22855, 28420, 31997, 37874, 45710, 63994, 75748, 91420, 94685, 127988, 132559, 159985, 189370, 265118, 319970, 378740, 530236, 639940, 662795, 927913, 1325590, 1855826, 2651180, 3711652, 4639565, 9279130, 18558260]

約数ペア:

[(1, 18558260), (2, 9279130), (4, 4639565), (5, 3711652), (7, 2651180), (10, 1855826), (14, 1325590), (20, 927913), (28, 662795), (29, 639940), (35, 530236), (49, 378740), (58, 319970), (70, 265118), (98, 189370), (116, 159985), (140, 132559), (145, 127988), (196, 94685), (203, 91420), (245, 75748), (290, 63994), (406, 45710), (490, 37874), (580, 31997), (653, 28420), (812, 22855), (980, 18937), (1015, 18284), (1306, 14210), (1421, 13060), (2030, 9142), (2612, 7105), (2842, 6530), (3265, 5684), (4060, 4571)]