81309080

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{131}}^1\times {\mathrm{263}}^1$

素因数の和:464

約数の個数: 64

約数和(自身を含む): 188179200

約数和(自身を除く): 106870120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 118, 131, 236, 262, 263, 295, 472, 524, 526, 590, 655, 1048, 1052, 1180, 1310, 1315, 2104, 2360, 2620, 2630, 5240, 5260, 7729, 10520, 15458, 15517, 30916, 31034, 34453, 38645, 61832, 62068, 68906, 77290, 77585, 124136, 137812, 154580, 155170, 172265, 275624, 309160, 310340, 344530, 620680, 689060, 1378120, 2032727, 4065454, 8130908, 10163635, 16261816, 20327270, 40654540, 81309080]

約数ペア:

[(1, 81309080), (2, 40654540), (4, 20327270), (5, 16261816), (8, 10163635), (10, 8130908), (20, 4065454), (40, 2032727), (59, 1378120), (118, 689060), (131, 620680), (236, 344530), (262, 310340), (263, 309160), (295, 275624), (472, 172265), (524, 155170), (526, 154580), (590, 137812), (655, 124136), (1048, 77585), (1052, 77290), (1180, 68906), (1310, 62068), (1315, 61832), (2104, 38645), (2360, 34453), (2620, 31034), (2630, 30916), (5240, 15517), (5260, 15458), (7729, 10520)]