20165980180

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{311}}^1\times {\mathrm{24749}}^1$

素因数の和:25200

約数の個数: 48

約数和(自身を含む): 42810768000

約数和(自身を除く): 22644787820

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 311, 524, 622, 655, 1244, 1310, 1555, 2620, 3110, 6220, 24749, 40741, 49498, 81482, 98996, 123745, 162964, 203705, 247490, 407410, 494980, 814820, 3242119, 6484238, 7696939, 12968476, 15393878, 16210595, 30787756, 32421190, 38484695, 64842380, 76969390, 153938780, 1008299009, 2016598018, 4033196036, 5041495045, 10082990090, 20165980180]

約数ペア:

[(1, 20165980180), (2, 10082990090), (4, 5041495045), (5, 4033196036), (10, 2016598018), (20, 1008299009), (131, 153938780), (262, 76969390), (311, 64842380), (524, 38484695), (622, 32421190), (655, 30787756), (1244, 16210595), (1310, 15393878), (1555, 12968476), (2620, 7696939), (3110, 6484238), (6220, 3242119), (24749, 814820), (40741, 494980), (49498, 407410), (81482, 247490), (98996, 203705), (123745, 162964)]