81997240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{1151}}^1$

素因数の和:1312

約数の個数: 64

約数和(自身を含む): 200309760

約数和(自身を除く): 118312520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 137, 260, 274, 520, 548, 685, 1096, 1151, 1370, 1781, 2302, 2740, 3562, 4604, 5480, 5755, 7124, 8905, 9208, 11510, 14248, 14963, 17810, 23020, 29926, 35620, 46040, 59852, 71240, 74815, 119704, 149630, 157687, 299260, 315374, 598520, 630748, 788435, 1261496, 1576870, 2049931, 3153740, 4099862, 6307480, 8199724, 10249655, 16399448, 20499310, 40998620, 81997240]

約数ペア:

[(1, 81997240), (2, 40998620), (4, 20499310), (5, 16399448), (8, 10249655), (10, 8199724), (13, 6307480), (20, 4099862), (26, 3153740), (40, 2049931), (52, 1576870), (65, 1261496), (104, 788435), (130, 630748), (137, 598520), (260, 315374), (274, 299260), (520, 157687), (548, 149630), (685, 119704), (1096, 74815), (1151, 71240), (1370, 59852), (1781, 46040), (2302, 35620), (2740, 29926), (3562, 23020), (4604, 17810), (5480, 14963), (5755, 14248), (7124, 11510), (8905, 9208)]