821191540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{2591}}^1$

素因数の和:2689

約数の個数: 96

約数和(自身を含む): 1975228416

約数和(自身を除く): 1154036876

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 26, 46, 52, 53, 65, 92, 106, 115, 130, 212, 230, 260, 265, 299, 460, 530, 598, 689, 1060, 1196, 1219, 1378, 1495, 2438, 2591, 2756, 2990, 3445, 4876, 5182, 5980, 6095, 6890, 10364, 12190, 12955, 13780, 15847, 24380, 25910, 31694, 33683, 51820, 59593, 63388, 67366, 79235, 119186, 134732, 137323, 158470, 168415, 238372, 274646, 297965, 316940, 336830, 549292, 595930, 673660, 686615, 774709, 1191860, 1373230, 1549418, 1785199, 2746460, 3098836, 3158429, 3570398, 3873545, 6316858, 7140796, 7747090, 8925995, 12633716, 15494180, 15792145, 17851990, 31584290, 35703980, 41059577, 63168580, 82119154, 164238308, 205297885, 410595770, 821191540]

約数ペア:

[(1, 821191540), (2, 410595770), (4, 205297885), (5, 164238308), (10, 82119154), (13, 63168580), (20, 41059577), (23, 35703980), (26, 31584290), (46, 17851990), (52, 15792145), (53, 15494180), (65, 12633716), (92, 8925995), (106, 7747090), (115, 7140796), (130, 6316858), (212, 3873545), (230, 3570398), (260, 3158429), (265, 3098836), (299, 2746460), (460, 1785199), (530, 1549418), (598, 1373230), (689, 1191860), (1060, 774709), (1196, 686615), (1219, 673660), (1378, 595930), (1495, 549292), (2438, 336830), (2591, 316940), (2756, 297965), (2990, 274646), (3445, 238372), (4876, 168415), (5182, 158470), (5980, 137323), (6095, 134732), (6890, 119186), (10364, 79235), (12190, 67366), (12955, 63388), (13780, 59593), (15847, 51820), (24380, 33683), (25910, 31694)]