918398975

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1\times {\mathrm{439}}^1$

素因数の和:660

約数の個数: 48

約数和(自身を含む): 1267210560

約数和(自身を除く): 348811585

約数列:

[1, 5, 13, 25, 41, 65, 157, 205, 325, 439, 533, 785, 1025, 2041, 2195, 2665, 3925, 5707, 6437, 10205, 10975, 13325, 17999, 28535, 32185, 51025, 68923, 83681, 89995, 142675, 160925, 233987, 344615, 418405, 449975, 895999, 1169935, 1723075, 2092025, 2825843, 4479995, 5849675, 14129215, 22399975, 36735959, 70646075, 183679795, 918398975]

約数ペア:

[(1, 918398975), (5, 183679795), (13, 70646075), (25, 36735959), (41, 22399975), (65, 14129215), (157, 5849675), (205, 4479995), (325, 2825843), (439, 2092025), (533, 1723075), (785, 1169935), (1025, 895999), (2041, 449975), (2195, 418405), (2665, 344615), (3925, 233987), (5707, 160925), (6437, 142675), (10205, 89995), (10975, 83681), (13325, 68923), (17999, 51025), (28535, 32185)]