13291264940

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{442747}}^1$

素因数の和:442854

約数の個数: 48

約数和(自身を含む): 29752665600

約数和(自身を除く): 16461400660

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 79, 95, 158, 190, 316, 380, 395, 790, 1501, 1580, 3002, 6004, 7505, 15010, 30020, 442747, 885494, 1770988, 2213735, 4427470, 8412193, 8854940, 16824386, 33648772, 34977013, 42060965, 69954026, 84121930, 139908052, 168243860, 174885065, 349770130, 664563247, 699540260, 1329126494, 2658252988, 3322816235, 6645632470, 13291264940]

約数ペア:

[(1, 13291264940), (2, 6645632470), (4, 3322816235), (5, 2658252988), (10, 1329126494), (19, 699540260), (20, 664563247), (38, 349770130), (76, 174885065), (79, 168243860), (95, 139908052), (158, 84121930), (190, 69954026), (316, 42060965), (380, 34977013), (395, 33648772), (790, 16824386), (1501, 8854940), (1580, 8412193), (3002, 4427470), (6004, 2213735), (7505, 1770988), (15010, 885494), (30020, 442747)]