261359410

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{131}}^1\times {\mathrm{149}}^1$

素因数の和:403

約数の個数: 64

約数和(自身を含む): 518918400

約数和(自身を除く): 257558990

約数列:

[1, 2, 5, 10, 13, 26, 65, 103, 130, 131, 149, 206, 262, 298, 515, 655, 745, 1030, 1310, 1339, 1490, 1703, 1937, 2678, 3406, 3874, 6695, 8515, 9685, 13390, 13493, 15347, 17030, 19370, 19519, 26986, 30694, 39038, 67465, 76735, 97595, 134930, 153470, 175409, 195190, 199511, 253747, 350818, 399022, 507494, 877045, 997555, 1268735, 1754090, 1995110, 2010457, 2537470, 4020914, 10052285, 20104570, 26135941, 52271882, 130679705, 261359410]

約数ペア:

[(1, 261359410), (2, 130679705), (5, 52271882), (10, 26135941), (13, 20104570), (26, 10052285), (65, 4020914), (103, 2537470), (130, 2010457), (131, 1995110), (149, 1754090), (206, 1268735), (262, 997555), (298, 877045), (515, 507494), (655, 399022), (745, 350818), (1030, 253747), (1310, 199511), (1339, 195190), (1490, 175409), (1703, 153470), (1937, 134930), (2678, 97595), (3406, 76735), (3874, 67465), (6695, 39038), (8515, 30694), (9685, 26986), (13390, 19519), (13493, 19370), (15347, 17030)]