1288794620

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{15173}}^1$

素因数の和:15350

約数の個数: 48

約数和(自身を含む): 2814352128

約数和(自身を除く): 1525557508

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 137, 155, 274, 310, 548, 620, 685, 1370, 2740, 4247, 8494, 15173, 16988, 21235, 30346, 42470, 60692, 75865, 84940, 151730, 303460, 470363, 940726, 1881452, 2078701, 2351815, 4157402, 4703630, 8314804, 9407260, 10393505, 20787010, 41574020, 64439731, 128879462, 257758924, 322198655, 644397310, 1288794620]

約数ペア:

[(1, 1288794620), (2, 644397310), (4, 322198655), (5, 257758924), (10, 128879462), (20, 64439731), (31, 41574020), (62, 20787010), (124, 10393505), (137, 9407260), (155, 8314804), (274, 4703630), (310, 4157402), (548, 2351815), (620, 2078701), (685, 1881452), (1370, 940726), (2740, 470363), (4247, 303460), (8494, 151730), (15173, 84940), (16988, 75865), (21235, 60692), (30346, 42470)]