81532220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{4813}}^1$

素因数の和:4851

約数の個数: 72

約数和(自身を含む): 215128032

約数和(自身を除く): 133595812

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 121, 140, 154, 220, 242, 308, 385, 484, 605, 770, 847, 1210, 1540, 1694, 2420, 3388, 4235, 4813, 8470, 9626, 16940, 19252, 24065, 33691, 48130, 52943, 67382, 96260, 105886, 134764, 168455, 211772, 264715, 336910, 370601, 529430, 582373, 673820, 741202, 1058860, 1164746, 1482404, 1853005, 2329492, 2911865, 3706010, 4076611, 5823730, 7412020, 8153222, 11647460, 16306444, 20383055, 40766110, 81532220]

約数ペア:

[(1, 81532220), (2, 40766110), (4, 20383055), (5, 16306444), (7, 11647460), (10, 8153222), (11, 7412020), (14, 5823730), (20, 4076611), (22, 3706010), (28, 2911865), (35, 2329492), (44, 1853005), (55, 1482404), (70, 1164746), (77, 1058860), (110, 741202), (121, 673820), (140, 582373), (154, 529430), (220, 370601), (242, 336910), (308, 264715), (385, 211772), (484, 168455), (605, 134764), (770, 105886), (847, 96260), (1210, 67382), (1540, 52943), (1694, 48130), (2420, 33691), (3388, 24065), (4235, 19252), (4813, 16940), (8470, 9626)]