980799440

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{137}}^1\times {\mathrm{821}}^1$

素因数の和:1080

約数の個数: 80

約数和(自身を含む): 2320900560

約数和(自身を除く): 1340101120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 137, 218, 274, 436, 545, 548, 685, 821, 872, 1090, 1096, 1370, 1642, 1744, 2180, 2192, 2740, 3284, 4105, 4360, 5480, 6568, 8210, 8720, 10960, 13136, 14933, 16420, 29866, 32840, 59732, 65680, 74665, 89489, 112477, 119464, 149330, 178978, 224954, 238928, 298660, 357956, 447445, 449908, 562385, 597320, 715912, 894890, 899816, 1124770, 1194640, 1431824, 1789780, 1799632, 2249540, 3579560, 4499080, 7159120, 8998160, 12259993, 24519986, 49039972, 61299965, 98079944, 122599930, 196159888, 245199860, 490399720, 980799440]

約数ペア:

[(1, 980799440), (2, 490399720), (4, 245199860), (5, 196159888), (8, 122599930), (10, 98079944), (16, 61299965), (20, 49039972), (40, 24519986), (80, 12259993), (109, 8998160), (137, 7159120), (218, 4499080), (274, 3579560), (436, 2249540), (545, 1799632), (548, 1789780), (685, 1431824), (821, 1194640), (872, 1124770), (1090, 899816), (1096, 894890), (1370, 715912), (1642, 597320), (1744, 562385), (2180, 449908), (2192, 447445), (2740, 357956), (3284, 298660), (4105, 238928), (4360, 224954), (5480, 178978), (6568, 149330), (8210, 119464), (8720, 112477), (10960, 89489), (13136, 74665), (14933, 65680), (16420, 59732), (29866, 32840)]