28721000818

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{313}}^1\times {\mathrm{1567}}^1$

素因数の和:1991

約数の個数: 64

約数和(自身を含む): 48211107840

約数和(自身を除く): 19490107022

約数列:

[1, 2, 19, 23, 38, 46, 67, 134, 313, 437, 626, 874, 1273, 1541, 1567, 2546, 3082, 3134, 5947, 7199, 11894, 14398, 20971, 29279, 29773, 36041, 41942, 58558, 59546, 72082, 104989, 136781, 209978, 273562, 398449, 482333, 490471, 684779, 796898, 964666, 980942, 1369558, 1994791, 2414747, 3989582, 4829494, 9164327, 9318949, 11280833, 18328654, 18637898, 22561666, 32861557, 45880193, 65723114, 91760386, 214335827, 428671654, 624369583, 755815811, 1248739166, 1511631622, 14360500409, 28721000818]

約数ペア:

[(1, 28721000818), (2, 14360500409), (19, 1511631622), (23, 1248739166), (38, 755815811), (46, 624369583), (67, 428671654), (134, 214335827), (313, 91760386), (437, 65723114), (626, 45880193), (874, 32861557), (1273, 22561666), (1541, 18637898), (1567, 18328654), (2546, 11280833), (3082, 9318949), (3134, 9164327), (5947, 4829494), (7199, 3989582), (11894, 2414747), (14398, 1994791), (20971, 1369558), (29279, 980942), (29773, 964666), (36041, 796898), (41942, 684779), (58558, 490471), (59546, 482333), (72082, 398449), (104989, 273562), (136781, 209978)]