291212455960

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1693}}^1\times {\mathrm{30937}}^1$

素因数の和:32780

約数の個数: 64

約数和(自身を含む): 660353047200

約数和(自身を除く): 369140591240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 1693, 2780, 3386, 5560, 6772, 8465, 13544, 16930, 30937, 33860, 61874, 67720, 123748, 154685, 235327, 247496, 309370, 470654, 618740, 941308, 1176635, 1237480, 1882616, 2353270, 4300243, 4706540, 8600486, 9413080, 17200972, 21501215, 34401944, 43002430, 52376341, 86004860, 104752682, 172009720, 209505364, 261881705, 419010728, 523763410, 1047526820, 2095053640, 7280311399, 14560622798, 29121245596, 36401556995, 58242491192, 72803113990, 145606227980, 291212455960]

約数ペア:

[(1, 291212455960), (2, 145606227980), (4, 72803113990), (5, 58242491192), (8, 36401556995), (10, 29121245596), (20, 14560622798), (40, 7280311399), (139, 2095053640), (278, 1047526820), (556, 523763410), (695, 419010728), (1112, 261881705), (1390, 209505364), (1693, 172009720), (2780, 104752682), (3386, 86004860), (5560, 52376341), (6772, 43002430), (8465, 34401944), (13544, 21501215), (16930, 17200972), (30937, 9413080), (33860, 8600486), (61874, 4706540), (67720, 4300243), (123748, 2353270), (154685, 1882616), (235327, 1237480), (247496, 1176635), (309370, 941308), (470654, 618740)]