81238376

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{211}}^1$

素因数の和:402

約数の個数: 64

約数和(自身を含む): 171720000

約数和(自身を除く): 90481624

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 68, 76, 136, 149, 152, 211, 298, 323, 422, 596, 646, 844, 1192, 1292, 1688, 2533, 2584, 2831, 3587, 4009, 5066, 5662, 7174, 8018, 10132, 11324, 14348, 16036, 20264, 22648, 28696, 31439, 32072, 48127, 62878, 68153, 96254, 125756, 136306, 192508, 251512, 272612, 385016, 534463, 545224, 597341, 1068926, 1194682, 2137852, 2389364, 4275704, 4778728, 10154797, 20309594, 40619188, 81238376]

約数ペア:

[(1, 81238376), (2, 40619188), (4, 20309594), (8, 10154797), (17, 4778728), (19, 4275704), (34, 2389364), (38, 2137852), (68, 1194682), (76, 1068926), (136, 597341), (149, 545224), (152, 534463), (211, 385016), (298, 272612), (323, 251512), (422, 192508), (596, 136306), (646, 125756), (844, 96254), (1192, 68153), (1292, 62878), (1688, 48127), (2533, 32072), (2584, 31439), (2831, 28696), (3587, 22648), (4009, 20264), (5066, 16036), (5662, 14348), (7174, 11324), (8018, 10132)]