639883985

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{3361}}^1$

素因数の和:3509

約数の個数: 32

約数和(自身を含む): 864168480

約数和(自身を除く): 224284495

約数列:

[1, 5, 13, 29, 65, 101, 145, 377, 505, 1313, 1885, 2929, 3361, 6565, 14645, 16805, 38077, 43693, 97469, 190385, 218465, 339461, 487345, 1267097, 1697305, 4412993, 6335485, 9844369, 22064965, 49221845, 127976797, 639883985]

約数ペア:

[(1, 639883985), (5, 127976797), (13, 49221845), (29, 22064965), (65, 9844369), (101, 6335485), (145, 4412993), (377, 1697305), (505, 1267097), (1313, 487345), (1885, 339461), (2929, 218465), (3361, 190385), (6565, 97469), (14645, 43693), (16805, 38077)]