82720820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{151}}^1$

素因数の和:230

約数の個数: 144

約数和(自身を含む): 224155008

約数和(自身を除く): 141434188

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 43, 49, 52, 65, 70, 86, 91, 98, 130, 140, 151, 172, 182, 196, 215, 245, 260, 301, 302, 364, 430, 455, 490, 559, 602, 604, 637, 755, 860, 910, 980, 1057, 1118, 1204, 1274, 1505, 1510, 1820, 1963, 2107, 2114, 2236, 2548, 2795, 3010, 3020, 3185, 3913, 3926, 4214, 4228, 5285, 5590, 6020, 6370, 6493, 7399, 7826, 7852, 8428, 9815, 10535, 10570, 11180, 12740, 12986, 13741, 14798, 15652, 19565, 19630, 21070, 21140, 25972, 27391, 27482, 29596, 32465, 36995, 39130, 39260, 42140, 45451, 54782, 54964, 64930, 68705, 73990, 78260, 84409, 90902, 96187, 109564, 129860, 136955, 137410, 147980, 168818, 181804, 192374, 227255, 273910, 274820, 318157, 337636, 384748, 422045, 454510, 480935, 547820, 590863, 636314, 844090, 909020, 961870, 1181726, 1272628, 1590785, 1688180, 1923740, 2363452, 2954315, 3181570, 4136041, 5908630, 6363140, 8272082, 11817260, 16544164, 20680205, 41360410, 82720820]

約数ペア:

[(1, 82720820), (2, 41360410), (4, 20680205), (5, 16544164), (7, 11817260), (10, 8272082), (13, 6363140), (14, 5908630), (20, 4136041), (26, 3181570), (28, 2954315), (35, 2363452), (43, 1923740), (49, 1688180), (52, 1590785), (65, 1272628), (70, 1181726), (86, 961870), (91, 909020), (98, 844090), (130, 636314), (140, 590863), (151, 547820), (172, 480935), (182, 454510), (196, 422045), (215, 384748), (245, 337636), (260, 318157), (301, 274820), (302, 273910), (364, 227255), (430, 192374), (455, 181804), (490, 168818), (559, 147980), (602, 137410), (604, 136955), (637, 129860), (755, 109564), (860, 96187), (910, 90902), (980, 84409), (1057, 78260), (1118, 73990), (1204, 68705), (1274, 64930), (1505, 54964), (1510, 54782), (1820, 45451), (1963, 42140), (2107, 39260), (2114, 39130), (2236, 36995), (2548, 32465), (2795, 29596), (3010, 27482), (3020, 27391), (3185, 25972), (3913, 21140), (3926, 21070), (4214, 19630), (4228, 19565), (5285, 15652), (5590, 14798), (6020, 13741), (6370, 12986), (6493, 12740), (7399, 11180), (7826, 10570), (7852, 10535), (8428, 9815)]