172968920

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1\times {\mathrm{431}}^1$

素因数の和:648

約数の個数: 64

約数和(自身を含む): 398131200

約数和(自身を除く): 225162280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 127, 158, 254, 316, 395, 431, 508, 632, 635, 790, 862, 1016, 1270, 1580, 1724, 2155, 2540, 3160, 3448, 4310, 5080, 8620, 10033, 17240, 20066, 34049, 40132, 50165, 54737, 68098, 80264, 100330, 109474, 136196, 170245, 200660, 218948, 272392, 273685, 340490, 401320, 437896, 547370, 680980, 1094740, 1361960, 2189480, 4324223, 8648446, 17296892, 21621115, 34593784, 43242230, 86484460, 172968920]

約数ペア:

[(1, 172968920), (2, 86484460), (4, 43242230), (5, 34593784), (8, 21621115), (10, 17296892), (20, 8648446), (40, 4324223), (79, 2189480), (127, 1361960), (158, 1094740), (254, 680980), (316, 547370), (395, 437896), (431, 401320), (508, 340490), (632, 273685), (635, 272392), (790, 218948), (862, 200660), (1016, 170245), (1270, 136196), (1580, 109474), (1724, 100330), (2155, 80264), (2540, 68098), (3160, 54737), (3448, 50165), (4310, 40132), (5080, 34049), (8620, 20066), (10033, 17240)]