81697210

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{137}}^1\times {\mathrm{1217}}^1$

素因数の和:1375

約数の個数: 48

約数和(自身を含む): 172454184

約数和(自身を除く): 90756974

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 137, 245, 274, 490, 685, 959, 1217, 1370, 1918, 2434, 4795, 6085, 6713, 8519, 9590, 12170, 13426, 17038, 33565, 42595, 59633, 67130, 85190, 119266, 166729, 298165, 333458, 596330, 833645, 1167103, 1667290, 2334206, 5835515, 8169721, 11671030, 16339442, 40848605, 81697210]

約数ペア:

[(1, 81697210), (2, 40848605), (5, 16339442), (7, 11671030), (10, 8169721), (14, 5835515), (35, 2334206), (49, 1667290), (70, 1167103), (98, 833645), (137, 596330), (245, 333458), (274, 298165), (490, 166729), (685, 119266), (959, 85190), (1217, 67130), (1370, 59633), (1918, 42595), (2434, 33565), (4795, 17038), (6085, 13426), (6713, 12170), (8519, 9590)]