20179180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{59}}^1\times {\mathrm{349}}^1$

素因数の和:431

約数の個数: 72

約数和(自身を含む): 50274000

約数和(自身を除く): 30094820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 59, 70, 98, 118, 140, 196, 236, 245, 295, 349, 413, 490, 590, 698, 826, 980, 1180, 1396, 1652, 1745, 2065, 2443, 2891, 3490, 4130, 4886, 5782, 6980, 8260, 9772, 11564, 12215, 14455, 17101, 20591, 24430, 28910, 34202, 41182, 48860, 57820, 68404, 82364, 85505, 102955, 144137, 171010, 205910, 288274, 342020, 411820, 576548, 720685, 1008959, 1441370, 2017918, 2882740, 4035836, 5044795, 10089590, 20179180]

約数ペア:

[(1, 20179180), (2, 10089590), (4, 5044795), (5, 4035836), (7, 2882740), (10, 2017918), (14, 1441370), (20, 1008959), (28, 720685), (35, 576548), (49, 411820), (59, 342020), (70, 288274), (98, 205910), (118, 171010), (140, 144137), (196, 102955), (236, 85505), (245, 82364), (295, 68404), (349, 57820), (413, 48860), (490, 41182), (590, 34202), (698, 28910), (826, 24430), (980, 20591), (1180, 17101), (1396, 14455), (1652, 12215), (1745, 11564), (2065, 9772), (2443, 8260), (2891, 6980), (3490, 5782), (4130, 4886)]